Welcome — to the PCMEE Production ® (pending)
Electronic Technician section of the site, the acronym — PCMEE represents: Personal Computers (P.C) —
Modems (Network Systems / Internet Related Systems / Sites) — Electro-Mechanics (Automotive Electrical Systems)
And Electronics (Electronic Systems), additionally — Business related clerical services
(Resum'e / Cover-Letter / Documentation) is also among the diverse technical services PCMEE Production provides
to our customers.
This section of the website has been designed to assist PCME Productions network sybertechs by providing
both foreign and domestic Electronics equipment troubleshooting data (tips),
more advanced technical literature can be obtained
via the GateKeeper
Contact Us pertaining to your repair concerns,
PCME Productions Accepts Absolutely No Responsibility For Any
Injuries That Might Occur Through Inaccuracies That Might
Exists Within The Technial Data Provided And Appreciates Any
Provided Comments Or Suggestions.
Daewoo TV-Video Combi Model: GB14F7T1
Smoke came out of vents, then shut down
Small pin hole in line output transformer type FSA36012M
Daewoo TV (CP785 Chassis)
No picture
Replace IC (TDA8385J)
Daewoo TV-Vid Combi Model: DVT-1482P (CP310 Chassis)
Totally dead except for a few rapid flashes from the green led at switch on
C811 a 100uF, 16v capacitor in the power supply was the cause, it is located next to the chopper transistor's heatsink. This is the same TV/Video as the Goodmans TVC14VP
Daewoo TV (CP775 Chassis)
Dead - faint ticking from PSU
LOPTx faulty - check Q401 (D18809a4 aka 2SD1880) for s/c and D406 for s/c
Ferguson TV Model: 28DG17UG (TX807CS Chassis)
To remove the protection (to assist with fault finding)
Remove TL061. It's a surface mounted transistor located near the line o/p transformer
Ferguson TV Model: 28DG17UG (TX807 CS Chassis)
No start up, l.e.d flashes orange 7 times then stops. All rails on secondary of chopper seem ok
You will probably find the line o/p transformer is at fault
Ferguson TV (TX92 Chassis)
Field fold-over / flyback lines visible at top of screen
Capacitor CF30 (47uF, 50v)
Ferguson TV (TX92 Chassis)
Dead, No LED, 2.5Amp fuse O.K. Some voltages present at BP02 ON/OFF switch connection. 160v at terminal D of TP16. 26v, 200v, 13v lines all zero
Replace TP16 (P6NA60FI) and diode DP17 (BZX55C15)
Goldstar TV Model: 20A80
No picture, FR406 ok
Check the video output amplifier stage for failure
Goldstar Video Model: P13I
Dead, no functions, no display
Replacing CP19 (1000uF, 10v) in the PSU restored operation
Goldstar TV-Vid Combi Model: KY14V30
Squeeking sound from chopper transformer
Shorted voltage regulator, zener diode or h-out
Goldstar TV (PC12A Chassis)
Dead
Replace D401
Goldstar Video Model: P13I
E-E in playback & dim display
CP25 (100uF, 10v) in PSU cured dim display. No need to dismantle whole deck. W152 was ok
Goldstar TV Model: CBT-9745 (PC91A Chassis)
Attempts to start up. When main switch is pushed ON, relay coupling and decoupling (on-off, on-off)
Replace: C805 (47uF, 50V) next to the TDA4605 and C801 (1uF, 50V)
Goldstar TV Model: CBT-9745 (PC91A Chassis)
TV dead. PSU ok, led lit. When button pushed on remote the LED goes out but set does not start (Missing HF voltage)
Replace: C417 (1uF, 250V) Elko for HF oscill. (next to HF trafo)
Goldstar TV Model: CIT-9322
Volume down control on the set will not work
Everything else worked fine on this rather old model except the volume down control (i didn't have the handset to see if this was also the case via the remote). The cure was to replace the micro IC1 which was an M491BB1
Grundig TV (CUC5310 Chassis)
Dead, no shorts found
Look for dry joints on the scan coil plug (may not be visable) also resolder the 12v and 5v regs
Grundig TV Model: ST70-460 (CUC4635 Chassis)
Intermittent start up and tripping
Dry joint on R636, vertically mounted 4.7 ohm wirewound in sw mode circuit
Grundig TV (CUC5310 Chassis)
Picture int disappears leaving snow on screen
Resolder the Xtal in the tuner
Grundig Video Model: VS920
No remote control operation or modulator output
Unlock the video with code 4934 + OK. Check if you have the remote control set on video 1. When you have the RP 95 remote you can set the remote to video 1 with code 8527 + OK
Grundig TV Model: 8214
Poor linearity / Vertical deflection problems
Check +D voltage on pin 12 of the vertical deflection module. If this voltage is less then 35V or has
ripple replace C628 (3300uF, 50V), also check fuse SI627 (T3,15A). Sometimes this fuse has resistance
causing a voltage drop across it
Hitachi TV Model: C1714T
Frame collapse, causing set to go dead, also can cause the regulator transistor, to go s/c. BUT12AF. H.T. unstable
Check R951 (39K) goes high, in this case 65K, causing HT to go high
Hitachi Video Model: VTM640
Low video level
Replace C1530 (47uF, 16v)
Hitachi TV Model: C2133TN (Nokia Stereo Plus) Chassis)
Very strong red content in the picture, sometimes the fault would clear with the strong red content fading until the correct greyscale was achieved
After much searching around i found the problem. There was a very small crack in the solder at RH23, this is a 2K4 surface mounted resistor located at the back of the tube base. Resoldering both sides of it cured the fault
Hitachi TV Model: C2846TN / C2546TN
Field collapse (horizontal white line on screen)
R710 dry joints. Same as C2146TN & C2546TN problem solved with thanks to Mike G & Barty. Power off/unplug. Get to circuit board underside with aerial socket up-R710 is near top and right of centre-cluster of 4 joints best resoldered
Hitachi TV Model: C2846TN
Intermittent partial collapse of picture vertically (picture squashes down temporarily)
See Field collapse tip - it will happen so anticipate it and correct at you leisure rather than have the TV fail completely in the middle of you favourite show
Hitachi TV Model: C32W511TN (A7 Chassis)
Intermitently goes to standby
Check R959 (as described by Mark C24W511TN) and found no problem there, however I discovered that several connections in the area of R959 had fractured. They appear to be components near/attached to a heat sink. Re-soldering the joins did the trick
Hitachi TV Model: C1709T
Dead (H.T high and tripping)
Replace ZD903 and R909 (39K) also check ZD901 (2.7v) for s/c
Hitachi TV Model: CPT1446R (NP84CQ Chassis)
H.T fluctuations, picture becomes half white and half black. H.T varies from about 80V to 110V
Replace ZD902. It's a 10V zener diode
Hitachi TV Model: C32WD2TN2 (A7 Chassis)
Volume goes to maximum when volume plus or minus selected
Replace R039 (10k) pull up resistor for micro switches, gone slightly low value
Hitachi TV Model: C2519T (G8Q Chassis)
This set was dead apart from a hissing sound from the speaker, no standby led
5 volt regulator on front panel had 13 volt input but only 1 volt output, Replacement cured the fault
Hitachi TV Model: C28WS10TN
Poor starting, some times comes on then cuts out with LED going out
Dry joints along centre heatsink where the three ICs are mounted, reflow solder on ICs and then check HT (160 Volts)
Hitachi TV Model: C2867TN
The set was going off intermittently
Resoldering all three pins on regulator IC952 cured the problem
(Anonymous)
Hitachi TV Model: C1709T
Dead (H.T high and tripping)
Replace ZD903 and R909 (39K) also check ZD901 (2.7v) for s/c
Hitachi TV Model: CPT1446R (NP84CQ Chassis)
H.T fluctuations, picture becomes half white and half black. H.T varies from about 80V to 110V
Replace ZD902. It's a 10V zener diode
Hitachi TV Model: C32WD2TN2 (A7 Chassis)
Volume goes to maximum when volume plus or minus selected
Replace R039 (10k) pull up resistor for micro switches, gone slightly low value
Hitachi TV Model: C2519T (G8Q Chassis)
This set was dead apart from a hissing sound from the speaker, no standby led
5 volt regulator on front panel had 13 volt input but only 1 volt output, Replacement cured the fault
Hitachi TV Model: C2867TN
The set was going off intermittently
Resoldering all three pins on regulator IC952 cured the problem
Hitachi TV Model: C32FW523NA (A8 Chassis)
Procedure to enter service mode
Switch tv on then press menu then press vol up and vol down on the front of the set simultaneously and hold until menu appears
Hitachi TV Model: C2119E (Issue9 Chassis)
No sound control, procedure to exit factory preset mode
Hold 'VOL+ and 'VOL- buttons whilst switching on
Hitachi TV Model: C2546TN
Prodedure to remove `C46TN` from screen
Press the 2 VCR buttons together, the menu will appear, then switch to standby mode, turn appliance back on and prompt should have disappeared. When tv is turned on it will ask you to search for a channel, select this and then cancel
Hitachi TV Model: C2864TN
Psu in slow trip. 630mA fuse on E/W panel blown
Top E/W diode leaky D704 (BY228)
Hitachi Video Model: VT530E etc
Playback picture freezes repeatedly when warm / capstan motor overhaul
This symptom is usually due to contamination of the capstan motor bearing which can in turn lead to overheating of the drive chip, the problem can often be remedied by dismantalling the motor and thoroughly cleaning the bearing then lightly lubricating with a suitable light oil before reassembly
Hitachi TV Model: C2558TN (G8Q Chassis)
The H.T wouldn't vary at all, even though it was actually at the correct level (157V)
ZD941 (BZV10) was found to be o/c. It's a 6.5V zener diode and not as i had assumed by the numbering on it a 10V. ZD941 and the H.T pot VR941 are located next to the optocoupler
Hitachi TV Model: C2558TN (G8Q Chassis)
This set would not switch automatically into A/V mode when a video or any other equipment was connected via the scart
The set could manually be placed into A/V from the tv's front end controls. The cure was to replace ZD301 (ZTE251). I assumed it was a 2V but as i had none in stock i tried a 2.7V zener which worked perfectly. It's located near the scart socket
Hitachi TV Model: C32FW523NA (A8 Chassis)
No or very dull picture with osd and text just visible, A1 control makes little difference, looks like poor crt
18v zener diode Z703 s/c located near lopt, it is part of the acl beam current limiter
Hitachi TV Model: C1709T
Dead (H.T high and tripping)
Replace ZD903 and R909 (39K) also check ZD901 (2.7v) for s/c
Hitachi TV Model: C2864TN
Psu in slow trip. 630mA fuse on E/W panel blown
Top E/W diode leaky D704 (BY228)
Hitachi TV Model: C2119E (Issue9 Chassis)
No sound control, procedure to exit factory preset mode
Hold 'VOL+ and 'VOL- buttons whilst switching on
Hitachi TV Model: C32FW523NA (A8 Chassis)
Procedure to enter service mode
Switch tv on then press menu then press vol up and vol down on the front of the set simultaneously and hold until menu appears
Hitachi TV Model: C2117T
Goes straight to standby, after a quick burst of power
Replaced R952 (39K), had gone slightly high
Hitachi TV Model: C2558TN (G8Q Chassis)
The H.T wouldn't vary at all, even though it was actually at the correct level (157V)
ZD941 (BZV10) was found to be o/c. It's a 6.5V zener diode and not as i had assumed by the numbering on it a 10V. ZD941 and the H.T pot VR941 are located next to the optocoupler
Hitachi TV Model: C2117T
Goes straight to standby, after a quick burst of power
Replaced R952 (39K), had gone slightly high
Hitachi TV Model: C2566
Severe field cramp at bottom of the picture, but very stretched picture at the top
C608 (4.7uF, 63v.) in field stage o/c
Hitachi TV Model: C2133TN (Nokia Stereo Plus) Chassis)
Very strong red content in the picture, sometimes the fault would clear with the strong red content fading until the correct greyscale was achieved
After much searching around i found the problem. There was a very small crack in the solder at RH23, this is a 2K4 surface mounted resistor located at the back of the tube base. Resoldering both sides of it cured the fault
Hinari TV Model: CDTV2
Power supply fault, clicking noise, nothing else
Check C629 (100uF, 25v) for o/c
Jvc Video Model: HRJ205
Dead, no negative voltages on psu connector
Check R32 (100 ohms) in psu for o/c
Jvc Video Model: HRD560
3/4 of the playback picture is snow may look like duff heads!
Check 3.3uF,50v capacitor on lower drum motor pcb, this is an smd type but can be replaced with standard cap mounted on its side and tilted downwards slightly to clear mech chassis
Jvc Video Model: HRD750
Dead
This was due to C14 (1uF, 63v) in p.s.u being faulty, replaced with a 2.2uF, 63V
Jvc Video Model: HR-S4700EK
Intermittently crunches tapes on eject
I had to use a clear service cassette to see what was occuring during the eject sequence and found that during the unthread, the take up reel was rotating anti-clockwise and was not being braked, the felt pad on the take-up sub brake had fallen off the arm, a new brake cured the problem
Jvc TV Model: AV25S1EK
Field collapse
Resolder TDA3654 as joints appear good but on application of soldering iron show to be dry
Jvc Video Model: HRJ235EK
Rubbing noise at start of full tape with horizontal picture judder
Excessive take up tension! Replace take up clutch item 25, Pt no PQ46323A-1
(E.T. Sandy)
Jvc TV Model: C-V14EKS/B/W (Onwa Chassis)
No Red
I was hoping the nvm had become corrupt and turned the red drive down but it was fine (To enter service mode press and hold vol up and vol down on the front panel and switch set on). Thankfully ZD405 (8V2) had expired (almost s/c) and removed the red
Jvc Video Model: HRJ205
Dead, no negative voltages on psu connector
Check R32 (100 ohms) in psu for o/c
Jvc Video Model: HR-S4700EK
Intermittently crunches tapes on eject
I had to use a clear service cassette to see what was occuring during the eject sequence and found that during the unthread, the take up reel was rotating anti-clockwise and was not being braked, the felt pad on the take-up sub brake had fallen off the arm, a new brake cured the problem
Jvc Video Model: HRD750
Tracking does not lock. Picture runs up and down occasionally
(Very) Small electrolytic caps on the drum circuit board must changed (They may be the bigger can type, if you don't find small ones)
Jvc Video Model: HRJ235EK
Rubbing noise at start of full tape with horizontal picture judder
Excessive take up tension! Replace take up clutch item 25, Pt no PQ46323A-1
(E.T. Sandy)
Jvc TV Model: C-V14EKS/B/W (Onwa Chassis)
No Red
I was hoping the nvm had become corrupt and turned the red drive down but it was fine (To enter service mode press and hold vol up and vol down on the front panel and switch set on). Thankfully ZD405 (8V2) had expired (almost s/c) and removed the red
Jvc TV Model: AV28WZ2
Blank raster
Replace defective TDA6111Q for Red, Blue and green
Jvc Video Model: HRJ205
Dead, no negative voltages on psu connector
Check R32 (100 ohms) in psu for o/c
Jvc Video Model: HR-S4700EK
Intermittently crunches tapes on eject
I had to use a clear service cassette to see what was occuring during the eject sequence and found that during the unthread, the take up reel was rotating anti-clockwise and was not being braked, the felt pad on the take-up sub brake had fallen off the arm, a new brake cured the problem
Jvc Video Model: HRJ235EK
Rubbing noise at start of full tape with horizontal picture judder
Excessive take up tension! Replace take up clutch item 25, Pt no PQ46323A-1
Jvc TV Model: C-V14EKS/B/W (Onwa Chassis)
No Red
I was hoping the nvm had become corrupt and turned the red drive down but it was fine (To enter service mode press and hold vol up and vol down on the front panel and switch set on). Thankfully ZD405 (8V2) had expired (almost s/c) and removed the red
Jvc TV Model: AV-S250EKT
Set dead. Faint whistling noise on switch on. No standby LED
Replaced STR1006, no dfference. Line O/P Transistor OK. 36 Volt Zener, D614 found to be short. This zener is on the secondary of Xformer, T601. This short causes the 12 V start up supply cct, which includes STR1006 not to come on
Jvc TV Model: C14ET1EK (ONWA Chassis)
Picture height is reduced to 2 inches
Replace C418. It's the coupling capacitor from the frame circuit to the scanning coils. It's value is 1000uF, 25V
Jvc Video Model: HRJ265
Capstan motor intermittantly stopping and starting
Replaced motor
Jvc TV Model: C14E1EK
Tuning drift,worse at high channel no's
Dry joints inside tuner unit, connections between edge of pcb and lugs
Jvc TV Model: C14E1EK
Dead, in standby, HT present at relay RLX401, no 12 volts at C419
R425 (5.6ohm) o/c, ZD402 (12 volt zener) s/c and C426 (2200uF, 25volt) faulty
Jvc Video Model: HRD560
3/4 of the playback picture is snow may look like duff heads!
Check 3.3uF,50v capacitor on lower drum motor pcb, this is an smd type but can be replaced with standard cap mounted on its side and tilted downwards slightly to clear mech chassis
Jvc Video Model: HRJ265
Capstan motor intermittantly stopping and starting
Replaced motor
Jvc TV Model: C-V14EKS/B/W (Onwa Chassis)
No Red
I was hoping the nvm had become corrupt and turned the red drive down but it was fine (To enter service mode press and hold vol up and vol down on the front panel and switch set on). Thankfully ZD405 (8V2) had expired (almost s/c) and removed the red
Jvc Video Model: HRD750
Dead
This was due to C14 (1uF, 63v) in p.s.u being faulty, replaced with a 2.2uF, 63V
Jvc TV Model: AV21F1EN
Channel reception lost if tuner socket moved
Dry joints on IC522, IC521 and IC541 (located in the big heatsink about middle of the main pcb)
Jvc Video Model: HRJ610
Dead
Transistor Q31 in PSU leaky
Jvc TV Model: AV25S1EK
Field collapse
Resolder TDA3654 as joints appear good but on application of soldering iron show to be dry
Magnavox TV Model: RP2781 C101 (27X105-00AA Chassis)
No vertical deflection
If resistor R445 (1ohm) has gone open circuit this may cause IC550 (LA783x) to also fail. Replaced both IC550 and R445 Magnavox TV Model: T979
No picture or sound, trips breaker
Capacitor C16 (0.1uF)
Magnavox TV Model: T946
Loses vertical and horizontal sync
Transistor Q8 shorted
Matsui TV Model: 2109NS / 2107NS Mk2
Standby LED blinks off when Standby pressed on remote control. Supplies do not come up and set does not run.
Value of R256 (4K7 SMT) is marginal to turn Q504 on fast enough for micro to see supplies come up. Replaced R256 with 1K (0805 SMT) problem solved
Matsui TV-Vid Combi Model: TVR185
Int sound
Check voltage on sound IC, if it drops with high volume change C620 (1000uF, 25 vdc)
Matsui TV Model: TVR180
No sound on TV, ok in play and on recordings
Change address data 0D from 00 TO B3. This worked for me as well - removed chip and changed location 10D as above (I guess there may be a way to do it without tearing unit apart but didn't have any manuals!)
Matsui TV Model: 25M2 (Sanyo? Chassis)
Set dead, no PSU output. 320V supply ok
Replace start up resistors R620/R624 both 120K. Then set worked ok
Matsui TV Model: 14V1R
Dead, fuse blown (blackened)
Replace IC6380 (UC3842AN) and T665 (MJF18004)
Matsui TV-Vid Combi Model: 185
When blocked out from TV by pin code being incorrectly entered
If you ring up Dixons/Currys they will tell you to bring it in where it will have to be reset, requiring you to pay a charge of Ģ15+
Leave overnight or for 12+ hours and it will after a time delay unlock. I wonder why they don't tell you this - moneygrabbing f******!!!
Mitsubishi TV Model: CT29B2STX
Line output transistor s/c, repeated failure
Replace the four caps in the power supply C905 (470uF, 35V), C906 (470uF, 50V), C909 (2.2uF, 50V) and C920 (100uF, 25V) also note transistor varies with different size c.r.t.
Mitsubishi TV Model: CT29B2STX
Various faults, dead, int. dead, poor frame, poor E-W
Change all electrolytic capacitors in the primary. Check all large electrolytics in the secondary (Ie bigger that 470uF), check all capacitors around IC950 (error amp.). Most capacitors you will find are leaking electrolyte. Might be a long job!!!
Mitsubishi TV Model: CT25M2TX
Frame collapse, destruction of AN5521 frame chip at switch on
Replace the AN5521 then replace the 47uF, 35v electrolytic in the power supply. Also check the 330uF, 35v capacitor next to the frame chip for leakage
Mitsubishi TV Model: CT29B2STX
Blank raster with sound / field collapse
The field output chip IC451 (TDA8178S) was faulty, as this original Mitubishi part was no longer available a kit had to be fitted (no.H27PO14010 for this model), this uses a different chip - type STV9379
Mitsubishi TV Model: CT2227BM
Intermittent no sound or picture
Desolder, then resolder Line Driver Transformer connections
Mitsubishi TV Model: BD28WS (11AK19 Chassis)
At switch on front l.e.d turns green, blinks 3 times then set returns to standby. All h.t voltages rise, then fall away as set goes into standby
Dry joints IC807
Multitech Video Model: VP-1600
Black screen on playback, no test signal
Resolder and clean test switch
Nokia TV Model: SP71D1 and others (Stereo Plus Chassis)
Tv does not start from stand-by. Indicator led blinks quickly
Replace the two smd condensers in parallel between pin 2 of IC NO62 (reset line). Remove all of the red glue below the condensers. These condensers must be replaced by new ones of 47nF and 100nF in parallel. IC NO62 (TDA8137) sometimes must be also replaced
Panasonic Video Model: NV-HD101
No picture on e-e, I.F output ok
This was due to switching chip IC3901 (M51292FP) on the scart panel
Panasonic Video Model: NV-G40
Picture noisy on all channels
Transistor Q4 (D1330) o/c
Panasonic Video Model: NVF70
Bad picture, may be stripy with blue spots
Change C22 in the power supply (680uF, 10V). I used a 1000uF, it works great
Panasonic TV Model: TC1400T
Int loss of signals
Check R545 for dry joints
Panasonic TV Model: TC2195DRS (Z3T Chassis)
SMPS noise. Low volt and high current on Usyst, no screen or sound
FBT TLF15606F
Panasonic Video Model: NV-HD675 (Z-Mech Chassis)
Intermittently shutting down with HO1 in display
Problem can be caused by stator board VEK9017 but in this case the problem was the upper drum assy! The bearings seize up when warm!
Panasonic Video Model: NV730B (D1 Mechanism)
Video heads wear very quickly
Check the back tension if you haven't done so already - it was set too high when manufactured.
Panasonic TV Model: TX28W3 (EURO 1 Chassis)
At switch on a strange sound comes and goes for a few seconds, no sound and vision
Check R622, Q624 and T639
Panasonic TV Model: TX33AK10 (EURO 5 Chassis)
Strange picture / bleary / movement blurr etc etc
This problem was caused by eeprom corruption, once the eeprom was reset the fault was cured (note that after a reset reinstallation i.e. tuning will be required)
Panasonic Video Model: NV-HD100
Display dead rest of functions ok
Change transistor Q1701 on Timer operation board
Panasonic TV Model: TX-2470
Cogging on vertical elements of picture, p.s.u squealing
Replaced C808 (10uF, 50V) It had gone low in value
Panasonic TV Model: TX-21S3T
No line drive
This one had me puzzled for a while until I found that diode D861 was open-circuit (intermittently!)
Panasonic Video Model: NVHD100
Narrow sync pulse output in E-E but ok when pre-recorded tape is played
Replace 3.3uF, 50v SM capacitor on hybrid IC301, If fault persists replace IC301 on the Y/C sub board
Panasonic TV (EURO 7 Chassis)
Procedure to enter the service mode
Set bass to maximum, treble to minimum, then hold down the index button on the remote and press the v button on the set
Panasonic TV Model: TX21V1 (Alpha 2 Chassis)
Bright red raster with flyback lines,shutting down after about 30 seconds with squealing from power supply
The fault was due to the supply choke to the red output stage on the tube base panel being O/C, I can only assume the shut down was due to excessive beam current, a long soak test proved all was now ok
Panasonic Video Model: NVG30
Operates for about half hour to an hour and shuts down
Capstan IC located on the underside of main PCB was dry jointed due to exessive heat. Remove and discard plastic cover and apply fresh solder removing old. Also refresh heatsink compound.(I'll try extending the heatsink too)
Panasonic TV (Z8 Chassis)
Procedure to enter the service menu
Set tv on channel 99 position, lower sharpness to minimum setting, press mute on the handset while at the same time pressing V on the front of the tv, navigate through the menu using the channel up/down buttons, alter values using the volume +/- buttons
Panasonic Monitor Model: E110 (NA Chassis)
Image and text are to large on screen
Replaced flyback
Panasonic TV Model: 14B3T (Z375 Chassis)
Excessive vertical overscan caused by a poor factory set up
Enter service mode and alter V Size:-
Select channel 70. Set Sharpness to min. Press the Off Timer button on the remote and at the same time press the DOWN button on the set front panel. UP/DOWN steps thru' menus; +/- alters values; STR stores changes
Panasonic Video Model: NVHD660B (K DECK Chassis)
When inserting tape, tape goes in, get a motor whirring noise, and tape ejects again with an "F02" or "F04" error. Closer examination shows that tape seating correctly, but tape not being fed out to the head
Cause was the motor powering the main mechanical feed/load and eject gear, underside of main front right of central chasis. Small plastic part on motor spindle under gear had split, so slipping. Secured part and gear to spindle with super glue! OK now!
Panasonic Video (K DECK Chassis)
No eject, code `F06`
Check the condition of the load motor pulley. In my case the sleeve on the motorshaft was cracked. fixed it by roughning the shaft with emery paper, degreasing the sleeve and securing it to the shaft with superglue. Keep glue away from bearing: eureka!
Panasonic Video Model: NVFS90EG
Power supply problem, high frequency sound only !
Check / replace C9 (1uF, 400V)
Panasonic TV Model: TX32PF10 (EURO 4 Chassis)
Over a short period of time the convergence of the picture gets steadily worse. Eventually it is so bad that even the teletext shows double or triple images when they are made up of a combination of colours. Pure colours: Red, Green or Blue are OK.
The Tube must be replaced. Apparantly this is a known problem to Panasonic, especially on 32" tubes. It has been known to happen both in and out of warranty. So far Panasonic when contacted have also paid for repairs when out of warranty (2 years old)
Panasonic TV Model: TC-21 S3R (Z7 Chassis)
Picture fades away few seconds after start-up till no picture. Sometimes no picture at all. Sometimes picture OK for longer. Sound unaffected.
Faulty joints on CRT pcb. Cracked solder joints at tube socket connections on CRT circuit board. Caused variable supply to CRT heaters. Resolder all socket pins to pcb.
Panasonic TV (EURO 4 Chassis)
Int going into standby
Replace C454 a 22nF smd, located near the Frame o/p ic.
Panasonic TV Model: TX25W1E
Screen turns white intermittently
Bloqueo de la fuente se va el diodo R2KL
Panasonic TV Model: TX28PK2
Internal 3.15A mains fuse blown with no obvious cause
The official Panasonic modification is to uprate the mains fuse from 3.15A to 5A
Panasonic TV Model: TX33AK10 (EURO 5 Chassis)
Procedure to reset eeprom
Press volume minus (-) on the set while also pressing the remote controls status button (this button has a + sign by it and is located above the red text button), this should now have initiated the reset routine and displayed data should be seen
Panasonic Video Model: NV870 (D1 Mechanism)
Noisy FM audio
Add a 0.01uF 50v ceramic capacitor between pin 9 of IC4509 and ground (only applies to units with serial numbers prior to D5K)
Panasonic Video Model: NV870 (D1 Mechanism)
Mode switch chatters
If it still does this with a new mode switch, check the serial number. If it's prior to numbers beginning A5K... then add a 560 ohm resistor and a 50v 0.68uF electrolytic capacitor in series, between pin 2 of IC6002 and ground.
Panasonic Video Model: NV-H75
Dead
Check C1003 (1uF, 100v) then the STRD1806 and D1004 for s/c
Panasonic Video Model: NVJ35
Noisy capstan
C22 in Power supply fixed it for me
Panasonic Video Model: NVF70
No sound via SCART socket
Fit R4908 and R4910 on input/output pack, as they may be missing ! (Both 47 ohm)
Panasonic Video Model: NV370E
Display shows dew sensor at irregular intervals and different circumstances causing the video to go in standby mode
Bouncing effect of power switch on timer board. Only one section of this double pole switch is used. Add a 1nF capacitor in parallel to this switch and use the second section as well
Panasonic TV Model: 21LIT
Dead set, only red LED is on
Replace IC AN5606k
Panasonic Video Model: P03RMK2 (VJDO3D40 Chassis)
Int capstan motor stops responding
Changed the IC No. BA6871S
Panasonic TV Model: CT-T14R
El diodo en paralelo con condensador electrolitico C810 vuela porque este voltaje esta bien alto cerca a 200 voltios debe ser 138v
Cambiar la R610 de 110k (estaba alterada)
Panasonic Video Model: NVHD100
Dead after storm
Check the STRS6545 regulator chip and the mains fuse
Panasonic TV Model: TC15M1R
Tries to start, led lights once, and shuts down
Disconnect pin 6 of loptx, set should run with frame collapse. Replace frame IC to effect cure
Philips TV (A10E Chassis)
Randomly switching to scart input when the programme output from the tuner should be displayed
This is now becoming a common problem, the cause being the painter chip IC7064 which is located on the small signals panel, there are 8 different versions but only 3 common versions
Philips TV (ANUBIS A-AC Chassis)
Low 95v rail, (35v)
C2530 open circuit completely
Philips TV Model: GR2.4AA (GR2.4AA Chassis)
No picture, just black screen
Check R3414, an SMD chip on the CRT board. There could be invisible bad solder joints
Philips TV (A10 Chassis)
Procedure to view customer service menu
Press Mute button on handset and any button on the TV, hold for a few seconds and menu will appear
Philips TV Model: 21PT5505/05 (L9.1E Chassis)
The fault with this tv was a snowy picture (no channels tuned in) also the permanent 33V supply on pin 9 of the tuner was low at only 1.6V
The first thing i tried was a resistance check between pin 9 and ground. The reading was only 120 Ohms. There's a surface mounted cap right next to pin 9 of the tuner. This was found to be leaky, It's value is 47nF. Also resistor 3442 (3.9K) was o/c
Philips TV Model: (GR2 Chassis)
Sound but no picture
Check the LOT cable for short circuit
Philips TV Model: 21PT166B/00 (AA5 AB Chassis)
No drive to LOP transistor
Middle sections checked OK. Carefully scoping the TDA8361's Hor. output showed gnd level to be at +0.8v not enough to drive next stage. Change the TDA8361
Philips TV (CP110 Chassis)
Image appeared after a 5-20 minutes, sound was choppy when changed by the remote
Replaced C2690 (100ĩF, 50V) with a 100ĩF, 63V type, this is located on the small overvolt board in the power supply area
Philips TV (CP110 Chassis)
Vertical ripples on horizontals
Replaced C2633 (100ĩF, 25V)
Philips TV Model: 28PW6005 (A10 Chassis)
Changes to ext 1 when watching tv (ok with video input)
IC7064 defective, replace it. Philips best nr= 311125054501. price = 48 euro, after replacement the smart settings have been set to 255 read the instruction note for this software!! Code number instruction note = 996500013923
Philips TV Model: 14PV163
Reverts to standby from switch on via TV or Video
No 5v rail because FET MTP3055 o/c. (BUZ71 will do nicely)
Philips Video Model: VR722 (LUCY Chassis)
LSM-45 power supply faulty after power failure
Replaced elco 2112 (100ĩF, 385V) and capacitor 2116 (100nF, 400V). See also my tip about the philips VR-723 (Cooling down during power outtage). Cheers
Philips TV Model: 27CE4599-33R (2A Chassis)
No sound, with sound at maximum you can hear a weak noise
Change IC7102 (U2830B if found, if not U2829B), this IC is located on the sound demod pcb
Philips Video Model: VR723 (LUCY Chassis)
Power supply LSM-45 would not start up after power failure
Cooling down of the machine during the power outtage triggered the problem: inside the supply module excessive heat is present that causes components to age rapidly, especially those that are located close to the heatsink. Replaced cap. 2116 (100nF, 400V)
Philips TV Model: 25PT4423 (L6.2 Chassis)
Stuck in standby, LED on, no HT
There may be no 5V to the microprocessor. Check R3509 and D6501. Replace R3509 with a 47k 1 Watt version (4822 053 10473). D6501 is type BZX79B5V6 (4822 130 34173). Check the +150 volt rail, 145V is too low
Philips TV (L9.2E Chassis)
Fuse 1572 blown
Disconnect pin 44 on IC7600, if the fuse stops blowing suspect processor IC7600. It is really expensive, at least in Sweden !
(Kalle Birgersson)
Philips TV Model: 25PT512A-05 (GR2.2 Chassis)
Dead set HT 140V ok
Replace standby Thermistor THY6670
Philips TV Model: 25PT532A/05 (GR2.2 Chassis)
Power supply dead, blowing fuse
Fault was transistor BUT124F (7625) short circuit, replaced Transistor and also changed ic CNR50 (7614) and TDA8385 (7600) this solved the problem
Philips TV (CTN-BB Chassis)
Dead. F1500 o/c, mosfet s/c
Mosfet T7525 shorts, due to smoother cap C2505 goes low capacity. IC7514 (TDA4605) must also be replaced
Philips TV Model: 32PW6526-05 (SA10E Chassis)
Procedure to exit child lock with pin unknown / "locked" displayed on screen
Switch set on, press menu, select feature and press enter, select parental lock and press enter, then enter the code 0, 7, 1, 1 twice, the lock should now have cleared
Philips Video Model: VR678
Reel brakes not operating
Due to broken plastic pivot for pulse slider (item 110) mounted on chassis (does not look like replacement part but wve stock holder, pulse mech kit Pt no. 16256HL)
(Anonymous)
Philips TV Model: 33SL5796/16B (FL 1.0 Chassis)
Snowy picture specially in VHF band. After about 5 minutes, picture snowy in all bands. About 10 minutes after switching on, no picture nor sound, just snow on the screen
Replaced the TUNER/IF. Original code was FQ816ME which is no longer in production. Replacement code is FQ916DME
Philips Video Model: VR6448 (20921 Chassis)
Mechanism jammed, some posts hard to turn
Grease has turned into cement!! Oil most of the moving parts, and move them to ensure oil penetrates
Philips TV Model: 28PW6005 (A10 Chassis)
Changes to ext 1 when watching tv (ok with video input)
Painter ic IC7064 failed on the ssb (small signals board)
Philips Video Model: Turbo Deck
Chews tapes and poor tracking
Fit new pinch roller
Philips TV (FL1.1AA Chassis)
Int shutdown with lights flashing
Check the 18v zener D6376
Philips TV (GR2.1 AA Chassis)
Poor picture quality from CVBS EXT1 and EXT3. Low intensity high saturation. Loss of sync. Shock and temp dependent
Dry joints on SMD resistors 3014 and 3019 on IF/Sound module other side of encapsulated TDA2549
Philips TV-Vid Combi Model: Televideo
No vcr transport functions via remote
This is the symptom when the remote control has switched from the correct VCR1 mode to the VCR2 mode (usually due to low battery voltage or the batteries being replaced), to rectify the situation hold both the stop button and button 1 together for 5 seconds, alternatively for different remote versions holding the stop button and button 2 together for 5 seconds will rectify the problem
Philips TV-Vid Combi Model: 14TVCR240
Poor tape transport, tape is crumpled, upper or lower side gets rippled
Replace the capstan roller, if the tape transport is still not smooth check the guidepole (between the audio/control head and the capstan), tape must touch border-ring. Adjust the audio head position (screws marked A and T)
Philips TV Model: 20PV164-05
Vertical frame collapse
Change vertical output drive IC and nearby electrolytic capacitor
Philips TV (L6.3 Chassis)
Failure of fusible resistors R3929 and R3930 (both 560R)
Unfortunately when these blow it is a sure symptom of LOPTX failure. When replacing these resistors, check the big blue 470nF, 250V capacitor behind them for signs of heat damage and replace if necessary, to avoid a recall (With resistors gone again!)
Philips TV Model: 20PT3742
Dead with LED blinking 4 times
The vertical output IC. is short circuit
Philips TV Model: 29FL1770 or 25FL1760 (FL1 Chassis)
No pictures or sound
Disconnect the P1 and P2 plugs on the right hand side board. L.o.p.t. side. If the set now starts up then change all sound output IC's
Philips TV Model: 29FL1770 or 25FL1760 (FL1 Chassis)
When selecting a channel it locks in initially but will then go off tune (as if the voltage tuning had varied)
Replaced the TDA i.c. in the tuner i.f. section. (tried the capacitors first of course).
Philips TV Model: 29FL1770 or 25FL1760 (FL1.0 Chassis)
Lights flashing at the front, if carefully interpreted they point to the primary of the power supply
Replaced 2SB 3795B chopper transistor, heated the heatsink with a hair dryer and it started right up, weird as the transistor was reading fine
Philips TV (GR1AX Chassis)
TV will not start, seems dead
First measure the 100 volt rail, if it is missing, then desolder the field output transformer, then recheck the 100 volt again, if it is now present, replace the transformer : the type = 37622 replacement = fat 30057 (Konig). After that everything was ok!
Philips TV (GR1AX Chassis)
No tuning
Check R3703 for o/c and R3702. Also in CTT-H AA chassis, then R3602
Philips TV Model: 37TA1070 (CTT-H AA Chassis)
No tuning voltage on tuner. Goes for: Philips and Magnavox versions. Also the Radiotone TV386VT-SCART which is the same
Resistor 3602 (8Kohm) broken. It is in the 95Volts line providing 33V for tuning circuit. This chassis uses the same processor as the GR1-AX which also might have the same problem. In that case resistor 3702 is to blame
Philips TV (GR2.2AA Chassis)
Does not work after LOT has been changed
Check / change D6561 also change the TDA2579B if there are any sync problems
Philips TV Model: Various
Sound but no picture
Have found on some Philips tvs (if they are older then 15 years) that a 2.7r resistor close to the HT transformer goes open, resulting in sound but no picture
Philips TV (GR2.2AA Chassis)
Protection circuit operating intermittently
Diode 6592 was found to have leakage causing voltage to protection circuit to be too high, Should be 23 - 28mV
Philips TV (ANUBIS A Chassis)
Low Contrast
C2448 (47uF, 200v) open circuit
Philips TV (GR1AX Chassis)
Sometimes does not start up from cold, but starts well from power off or standby after a few minutes
After checking all PSU components and consulting many colleagues, casually the tip of my iron touched the body of T2628 (BF423) and the set started. After more then 20 attempts, I realised that this transistor became intermittent when cold
Philips TV (GR2.2AA Chassis)
Dead, no line oscilation, power supply and line output stage are OK
Check / replace C2549 (390 or 470nF / 400V) and C2545 (1n5 or 1n2, 2000v)
Philips TV Model: 14GR1221 (GR1AX Chassis)
Procedure to enter or exit hotel mode (child lock)
Put the set on programme 38, press either store and pr - (to lock) and store and vol - (to unlock), or, press pr - and vol + (to lock and unlock), press buttons on the set (not remote)
Philips TV (CP110 Chassis)
Operating fine (good picture, sound and control) but sometimes sharp sounds coming from the set (not via audio), sounding like the LOPT but more loud, sharp and variable (15 Khz)
The long coil next to the LOPT was resonating/generating sound (not the LOPT itself), solved by cleaning the top and putting a bubble of silicone kit on it, and after temporarily removing the coil from the pcb fixating a ty-wrap strongly around the bottom increasing the magnet-ferrite contact-pressure and stiffness of plastic support construction
Philips TV (L6.2 Chassis)
No sound, no picture and the power supply makes a loud and low tone chirping noise
Replace shorted Capacitor 2912 (2n2, 2kV) on the deflection module. Note that 2912 is hard to find. It should be blue. If it's brown it's bust
Philips TV Model: 27CE4599-33R (2B Chassis)
Smearing out of one or several colors, best seen in txt-mode, my 27CE4599/30R smeared out in red
and green, not in blue, fully exchanging the drivers (input and output complete, otherwise the
RGB driver will blank the crt) moved the fault to the other color
Replace the 180K feedback resistors in the amplifiers with normal 1/4W metal film instead of 1/8W, they can become open circuited (in mine both green and red were faulty in this way). Change all 3 and not just the defective ones, replace also all the paralleled 75K resistors per color (fe by 47K+27K) to prevent bright color raster (they can also become open circuit)
Philips TV (A10E Chassis)
F on top righthand of screen then loss of geometery data and int shutdown, unable to restart but when try do so set cuts out
Painter IC failure, A small 100 leg device a joy to change if you have the right gear ! Ref IC7064 also updated software on new IC
Philips TV Model: 28PW6332/05
Loud bang internally, then completely dead. Plug fuse ok. Set about 4 years old
Internal 4A fuse blown. Bang was 330pF cap 2540 across PSU MOSFET exploding, suspect went s/c. Diodes 6513 & 6511 cracked and s/c. Replaced C2540. Could not get diode 1N5062/BYW55 rep, so replaced all 4 diodes with BY399. PSU MOSFET removed and checked,ok. Voila
Philips TV Model: 25PT4103 (L6.2 Chassis)
Blank screen no audio. No results from tuner or SCART socket. When G2 on LOPT is wound up a red line is visible
Check R3438 (3R3). In my case this was o/c and a replacement restored normal opperation
Philips PLASMA TV Model: 42FD9954 (S FM24 Chassis)
Green dots flashing over the screen in AV mode
Change resistor value R3641 from 1K to 100ohm
Philips TV Model: 27CE4599-33R (2B Chassis)
Red raster and red flyback lines
One of the paralelled 75 kohm resistors of red was open, replaced with 47K in series with 27K and fault gone (fault seeking in RGB output difficult due to intelligent auto calibrating-cutoff driver with picture mute TDA4580)
Philips TV (L6.2 Chassis)
Picture is horizontally narrowed and deformed
Capacitor C2913 (390nF, 250V) on the deflector PCB had lost capacity
Philips TV Model: 28ML8805-16B (FL1.6AA Chassis)
Disturbed sound in left channel
Check IC7009 (LM833) on LSP
Philips TV Model: 28ML8805-16B (FL1.6AA Chassis)
Ticking noise and line in picture
Transistor 7381 (BC848C) defective when hot
Philips TV Model: 28ML8805-16B (FL1.6AA Chassis)
Power supply faults. BUX85F in micro SOPS defective
Change the value of C2260 to 4n7F, replace 7270 with transistor BD825
Philips TV Model: 51TB1222 (L6.1 Chassis)
Sifflement de l alimentation usustem a9 v au lieu de 100v
C2423 (102k,1kv capa bleue) et tht
Philips TV-Vid Combi Model: 14PV505/07
Dead set, no red standby light on the front panel
Check D639, on the secondary of the chopper transformer, it supplies the 8Volt line, and goes s/c. Fuses remain in tact
Philips TV Model: 28PW6322-05 (MD1.2E AA Chassis)
No picture and no sound and when switching on, the high voltage transformer makes a sound
The capacitor in pos. 2420 was bad (it produced smoke after some time)
Philips Video Model: VR110
Power supply tripping
Damaged print at one of the pins on primary side of transformer
Philips TV Model: 28ML8805-16B (FL1.6AA Chassis)
Dead
Fuse open (3.15A), transistor 7216 (ON4827 = BUT12AF) shorted and solder joint of SMD resistor 3305 (11K) cracked (located on PS control board)
Philips TV Model: 28ML8805-16B (FL1.6AA Chassis)
Some front panel indicators are dark
LEDs are tired
Philips TV (GR2.4AA Chassis)
Power Supply Protection enabled
Replaced zener diode 6561 (BZX79C68)
Philips TV Model: GR1AX (GR1AX Chassis)
Will not start up from cold
Check if 95v line increases to over 100v when TR7628 (BF423) is chilled. If so, replace D6629 (BZX79-C12) and re-check 95v/re-adjust R3625. May also be worthwhile replacing TR7628 and C2629 as a precaution!!
Philips TV Model: 28ML8805-16B (FL1.6AA Chassis)
Clips picture at bottom when warm
Vertical deflection IC defective 7450 (TDA3654Q)
Philips TV (L6.1AA Chassis)
Sound goes off and no remote control functions when heated
T7505 in +5V supply, replace 482213041344
Philips TV Model: 20GR1250/52R (GR1-AX Chassis)
Tv turns on automatically. Power supply works well, +5V present but seems that CPU (7700) does not (no standby mode), no remote or control on the front of the set
After replacing CPU (TMP47C434) and crystal 1770 (4.0MHz) both control worked intermittently. Replacing transistor 7674 (BC548) solved the problem
Philips TV Model: 28ST2781 (GR2.2 AA Chassis)
Dead, psu ticking
Flyback cap (11nF, 1600V) was burned which caused the BU508AF flyback transistor to fail. Changed both
Philips Video Model: VR6264
No video or RF output. 12.3Vd.c. rail from 7002 (BD678) dead
Fault traced to dead short component located on PCB502 at componet ref no. 2024 (Philips blue radial capacitor 330uF, 16V). Philips part number 4822 124 40849. Cap has markings 036K0 T0 on it. Replaced and all sprang into life ok
Philips TV (L6.2 Chassis)
Power supply will not start up
Resistor 3506 (0.33 Ohms, 1w fusible) had failed, a replacement brought the set to life
Philips TV Model: TX2112 (U5N Chassis)
Sound mutes for too long when changing stations (up to 30 secs)
The MAB8441-T005 was faulty (no longer available)
Philips Video Model: VR200
Unit not working, no FL display, ticking from PSU, head drum twitching
Electrolytic cap in PSU primary dried up (47uF, 50v)
Rca TV (CTC177AF3 Chassis)
Overloaded picture, AGC not adjustable
Found IC7301 (CXA1594) bad. Replace ic and align tuner parameters
Rca TV Model: F27442 (CTC203AD5 Chassis)
No power, all standby voltages ok
Replace the guide plus. is located to the side of the tuner
Rca TV Model: F27442 (CTC203AD5 Chassis)
No picture and sound, only a high pitch sound at switch on
Remove horizontal transistor and measure the resistance across any two pins. This value should be no less than 200ohms
Rca TV Model: CTC166/167
Audio, no video
Change Capacitors C4501 and C4502, in the vertical section
Rca TV Model: F35670MB (CTC187CN3 Chassis)
Common problem bulletin:
Resolder ALL ground connections in and around, and under the tuner shields, solves most problems, prevents big problems as in dead EEPROM or CPU
Rca TV Model: F35670MB (CTC187CN3 Chassis)
Dead. F4001 (5 amp) fuse open
Check U4101 (STK730-150) Part no. 223948, Check CR4106 for short, Check Q4401 for short, replace all shorted or open parts, Check the two main filter caps on the secondary off of SMPS, replace vented caps, Replace 10uf 200v cap off of reg.
Rca Video Model: Various
After presing play picture appears but looks like in pause mode
Clean and lubricate the capstan flywheel
Rca TV Model: VJM2022T (CTC 121D Chassis)
Will not shut off
SCR 100 leaky
Thomson TV (ICC20 Chassis)
Set tries to start three times, HV comes up for a short moment. After this LED is blinking first four times, then seven times
Change vertical chip TDA8177F and the four diodes in front of it
Thomson TV Model: 28WS23E (ICC17 Chassis)
Set trips off int. Set tries to come on then goes back to standby
Dry joints on line o/p transformer
Thomson TV (TX807 Chassis)
EHT at switch on then goes dead
Frame i.c. s/c (TDA8177)
Thompson TV Model 24WK24U (ICC17 Chassis)
Set is tripping with flashing from the red standby light
Short the collector of TL71 to earth, if the set comes on you will find the frame chip is blown and ZL11 cp is o/c. If the set still wont come on them the LOPT is suspect
Thomson TV Model: (ICC17 Chassis)
Standby led fault codes and meanings list / standby led flashes then pauses
Code meanings are as follows: 10 = child lock mode, 11 = timer mode, 14 = there is no response from Iv01, 15 = there is no response from IS40, 20 = bus access prohibited by software, 21 = bus data line held low, 23 = bus clock line held low, 25 = switched 5v supply missing, 26 = crt is not warming in the allotted time, 27 = deflection failure more than three times, 28 = IF01 guard voltage (pin 8) exceeded, 34 = no response from the nvm chip IR03, 36 = incorrect address passed to bus handler, 37 = unexpected level on NMI line (power fail), 41 = bus data line not recoverable
Thomson TV Model: 28WR23EG (ICC17 Chassis)
AV1, AV2 are fine but AV3 do not work. Picture may be ok but no sound
Replace BA7604N, and check CX64 (47pF)
Thomson TV Model: 28WS23E (ICC17 Chassis)
At switch on set starts-up with lots of sparks inside CRT socket, then switches to standby
Replace FBT - HR 8317. There is a repair kit available from Thompson for this chassis, which includes a new loptx, tuning caps and a couple of coils. There are also some surface mount resistor value changes. It's Pt. no: 35175720
Thomson TV (TX91 Chassis)
PLL will not lock for all frequencies (keeps running during program search), on screen display moving / unstable
Changed the tuner and the STV8224 also check transistor at location TV02 is ok
Samsung TV-Vid Combi Model: TVP-3350IS (SCV11C Chassis)
No RF audio - ok on VCR tape playback and via SCART input
Hairline cracks in PCB tracks on motherboard directly at the back of the tuner
Samsung TV-Vid Combi Model: TVP-3350IS (SVC11C Chassis)
Set stuck in standby mode
Check for failure of Q801 (STRS6707)
Samsung TV Model: TXB1940
Red led blinks on / off, TV does not turn via power button and/or remote but after 20 minutes or so it turns on and works fine
Replace R902, R901, R905, R903, R900A, Q902, and possibly the two (one small and one large) capacitors in the section labeled as the power supply. The board will be black under the components that are bad. Q902 is an NPN transistor and is hard to find.
Samsung TV Model: W124W6VN
Picture darkens and lightens continually
This was due to a faulty first anode potentiometer, as its part of the l.o.p transformer a new l.o.p.t had to be fitted
Samsung TV/Video Combi Model: VM3105
No video, no audio. High pitch sound from power supply.
Replaced blown fuseable resistor R417 (1 ohm, 1/2 watt)
Samsung TV Model: 20A5
Partial field collapse
Check IC301 (TDA8350Q) and the 2 associated unmarked capacitors (10uF and 100uF, 63v) and the 10ohms,5w ceramic resistor across pins 3/5 of the above chip
Samsung TV Model: CB5012Z (P58SC Chassis)
Stuck in SECAM mode
Change resistor R514 (100K)
Samsung TV Model: CZ-21D83NS
Double picture or raster shifted
Check R414 (15K)
Sanyo TV Model: CE32WP2 (WB2-A32 Chassis)
Dead set, standby L.E.D lit
Check capacitor C634 (2n2, 2KV) in power supply for o/c or s/c
Sanyo TV Model: C25EG95B (EC3-A25 Chassis)
Dead set (no start up)
Replace R321 (120K)
Sanyo TV Model: AVM1902 (G4S-19020 Chassis)
Intermittent horizontal deflection
Resoldered the pins of horizontal deflection transformer
Sanyo Video Model: VHR287E
Cuts out on record and clock blinks out other wise OK
Replace PR512 JS130 (Light brown 1000 on side near front of PSU next to Q5103
Sanyo Video Model: VHR766
Completely dead, no display
Reg IC511 faulty (L5431). Replaced solved all problems
(Stuart - SOS tv & video repairs)
Sanyo Video Model: VHR776E
Dead
Check and replace PR512 (which is located towards the front right hand side)
Sanyo TV Model: CEP2190M
No sound
IC901 (TDA4935) blown due to excessive supply voltage, capacitors C619, C623, C810, C600, C601, C859 defective. Also verify R822
Sanyo TV Model: CEP3011V-30 (A1-B14 Chassis)
After switching on, no longer able to switch-off with remote control, standby light comes on with sound muted. (Original remote control: RM-700)
Opto-coupler PC113 faulty
Sanyo Video Model: VHR-796E
Dead
PR512 in the PSU was o/c
Sanyo TV Model: Spectra 2000
Picture had only wide screen effect
Found set on the street ! beautiful little 14" tv, still looks like new, replaced 33uF, 160v cap in power circuit as it was bleeding its guts onto the pcb, has worked perfectly ever since !
Sharp TV Model: Unknown
Fault like soft crt
I had 3 of these sets which all looked like soft crt, i changed the crt base from a known good set and all was ok i do not know the fault on the crt base yet but it was as good as new
Sharp TV Model: DV5131H (S3B Chassis)
Intermittent failure of Q603
Replace C601 (low in value)
Sharp TV Model: 54DT25S
Dead with ticking noise from line
Replaced C622, C604 and Q509
Sharp TV Model: 54DT25S
Frame foldover
Check C713, Q510 and Q505
Sharp TV Model: 66FW53H (FW Chassis)
Dead only neon lit
Check D735 across 150v rail, if s/c you will need to replace the opto and the D735. Check Q601 line o/p transistor as this may also be leaky
Sharp Video Model: VARIOUS
El mecanismo de transporte de la cinta pierde velocidad.
Rodillo del cabrestante or banda del cabrestante
(Santos)
Sharp TV Model: (21B Chassis)
No UHF Band
Check Q212
Sharp TV Model: 66FW53H
Dead - neon lit ... another fault!
Check the BZW04145 diode across C720, if short circuit, replace and also replace opto-isolator IC704 (MOC8106) and IC706 (TL431 voltage reference). You can put an 817 opto-coupler in diagonally
Sharp TV Model: 66FW53H
Dead - Neon lit
R713 and R714 (560K) high or o/c
Sharp TV Model: 66FW53H
Colours ramping, poor greyscale
Replace IC1002/3, Set will need reprogramming afterwards
Sharp TV Model: 51DT25H (U Chassis)
No audio R305 o/c
R305 (2.2ohm), Q3021 (BC636), Q3011 (BC635)
Sharp TV Model: CV2123 (CS Chassis)
Field fault / general modification
Add a 1N4148 diode from the emitter of Q509 to cathode of D513 (cathode to emitter of Q509), Pt No. RH-DX0045BMZZ, change R534 to 390ohms (Pt No. VRS-TV1JD391J) and add a fuse in series with L607 and L608 (Pt No. QFS-J1023CEZZ)
Sharp TV Model: DV3760H
Dead, led flashing red/green at first, then going to red standby
Replace C604 (1000uF, 16v) elec. cap. It is in the decoupling circuit for the 5 volt supply
Sharp TV Model: TV14 (Cinema Borg)
When set switched on "ENTER YOU LOCKCODE" appears on screen, customer had forgotten the lock code
Replaced the Microprocessor(64 pins)
Sharp TV Model: 66FW53 (widescreen DA-100 Chassis, 50 and 100Hz series)
E/W fault
Coil L603 (part num RCILP0286BMZZ) had severely burnt up and Q506 E/W driver 2SD2391 (Part num RH-TX0151BMZZ) was short circuit. If you have this fault check L604 for invisible dry joints, if you don't you may find you still have an E/W fault when you have replaced the faulty parts
Sharp TV Model: 37DT-25S
Dead, fuse ok
Replace Q701 (P3NA80FI) with a P4NB80FI-mbr. Check Q702 (BC338). Replace R703 (5,6E, 5W), all components in supply. Check print for poor contacts
Sharp TV Model: 66GF-63H
Blank grey raster with flyback lines,sound present and ok
Check pin 2 on connector H on tube base for 12V if high then check Q912 (BC337) for o/c
Sharp TV Model: DV7045SN
No vertical deflection
R615 open (0.13 ohm 1/2W). Also resoldered many bad solder joints
Sharp TV Model: DV6632H (4BS-C Chassis)
Led changes from green to red, fails to start up, no EHT but secondary voltages in psu ok (150V ok)
Check Q601 and Q606, these are Q600 LOPT drivers, there should be 2V P-P on base of Q606 and 150V on collector of Q601, replace Q606 with a BC182 (check pinout)
Sharp TV Model: 51DT-25H
TV does not turn on, no standby light
R704 was o/c
Sony TV Model: KVM2511 (AE1 Chassis)
Can not switch on the set, supply ok
Suspect L807 of o/c (Pt no. 140750400) also check R008 and C017
Sony TV Model: (BE1 Chassis)
Loss of sound when set was cold / extremely distorted sound when cold (after set was turned on)
Sound recovered within a few minutes of turn-on and was then normal. Check the electrolytic capacitors and diode near to the audio output IC heatsink. 100% rectification was achieved by replacing the diode and small value electrolytics in the immediate area of this IC's heatsink
Sony TV (FE-1 Chassis)
Set shuts down shortly after start up with standby led flashing 2, 4 or 5 times
Check / replace chip resistors R543 (47Kohms) and R541, R573 and R575 (all 100Kohms)
Sony TV Model: KVA2542
Fault not limited to this model. Turning itself to standby, mostly when warm. Flashing error code on LED's.
Dry joint on IC TDA8179 (under metal shield). May need replacing with STV9379. May also need to alter picture geometry settings (HSIZE, HPOS, VSIZE, VPOS) in service menu
Sony TV Model: KV27EXR25
No raster, the set will click on but no high voltage
Replaced IC651 (on the power board) type STRS6301 (Note: Use an original STRS6301, not an STRS6301A unless the 6301A comes from SONY) This part does run very hot
Sony TV (BE3D Chassis)
Picture too big, maybe strange colors, shuts down after a few seconds
Check for shorts in IC606 (9V voltage reg)
Sony TV Model: KVM1400
Will not power up, red LED blinks twice
Replace ICP fuse in HT line PS801 (N15, 600mA) mounted adjacent to pin 7 of LOPT
Sony TV (FE-1 Chassis)
Excessive width
This was due to Q532 (2SK2251-01) being s/c, it is advisable to also check other EW circuit components as a precaution
Sony TV (FE-1 Chassis)
No picture or dark picture
Check R516 (56Kohms, 0.5w) or R517 (27Kohms, 0.25w) for high resistance or o/c
Sony TV Model: KV20TS20
Snowy or intermittent picture, makes popping sound
Solder all coils in stand up board and tuner
Sony TV Model: KV2020
No Sound
Replace sound i.c (TBA120U)
Sony TV (FE-1 Chassis)
Loss of one colour with teletext and on-screen displays
Check the appropriate 2SC2412K transistor Q007 (green), Q008 (blue) or Q009 (red)
Sony TV (FE-1 Chassis)
Band of interference down left of screen on dark scenes
This was cured by adding a 1000pF, 2kV capacitor (part no. 1-161-731-81) in parallel with D539 in the EW diode modulator circuit
Sony TV Model: KV2165MT
Main fuse blasted
Replace the STR50115
Sony TV Model: KV2184
Main fuse blasted
Replace the STR50115, also replace the mains electrolytic capacitor
Sony TV Model: KVS3432U (AE2 Chassis)
Front led flashing 13 times, HT at first came on at 139V then went to 75V going off etc (shuting back down in protection mode)
Found R854 open circuit on -15 volt line (off line output transformer)
Sony TV Model: KV-25M80 (BG-2 Chassis)
Dead
5V Supply Transformer Short
Sony TV Model: KV28WS2U
No sound, speakers pop out if volume is raised from zero. Audio output from Dolby (A1) board at +5v dc.
Lightning damage to this set and connected VCR. Centre/surround amplifier IC shorted blowing IC protector to its negative rail. Both amplifier ICs replaced as a precaution. No damage to Dolby (A1) board
Sony TV Model: KV2184
Main fuse blasted
Replace the STR50115, also replace the mains electrolytic capacitor
Sony TV Model: KVS3432U (AE2 Chassis)
Front led flashing 13 times, HT at first came on at 139V then went to 75V going off etc (shuting back down in protection mode)
Found R854 open circuit on -15 volt line (off line output transformer)
Sony TV Model: KV-25M80 (BG-2 Chassis)
Dead
5V Supply Transformer Short
Sony TV Model: KV28WS2U
No sound, speakers pop out if volume is raised from zero. Audio output from Dolby (A1) board at +5v dc.
Lightning damage to this set and connected VCR. Centre/surround amplifier IC shorted blowing IC protector to its negative rail. Both amplifier ICs replaced as a precaution. No damage to Dolby (A1) board
Sony TV Model: KVA2942U
LED A flashes once, LED B flashes 13 times.
Bad solder joints on field IC1501 on back edge of main PCB
Sony TV Model: KX27PSI
Almost totally dead. No video or audio whatsoever. Only the clicking sound of two power relays when the set is turned on, and conversely at power down. The green/red lights on the front panel do appear. Repeated failure every 2-3 years. Why ?
An insight into what TV engineers did, after speaking to Sony UK: (a) 0.47K resistor replaces L656 in line to Q651 B. (b) 0.33 ohm resistor added between L650 and Q651 E. A resistor also replaces L657. Still lasted only 2 years. Any better ideas ?
Sony TV Model: (FE-1 Chassis)
No power although relay operates (main p.s.u inoperative)
Check IC606 (STRF6654) for failure, also check resistors R659 (0.33ohms,3w), R660 (0.39ohms,3w), fusible resistor R603 (0.1ohms,0.5w) and capacitor C625 (100uF,25v)
Sony TV Model: (FE-1 Chassis)
No teltext just P100
This problem was caused by Q405 (2SC2412K) being s/c
Sony TV (FE-1 Chassis)
After about 30 minutes the set goes to standby, the LED flashes and TV starts again. After 1 Minute the TV Displays : Antenna connection failed!
Change IC101 of IF on A-Board. Order Nr. 875946647
Sony TV Model: KVA2942U
LED A flashes once, LED B flashes 13 times.
Bad solder joints on field IC1501 on back edge of main PCB
Sony TV Model: KX27PSI
Almost totally dead. No video or audio whatsoever. Only the clicking sound of two power relays when the set is turned on, and conversely at power down. The green/red lights on the front panel do appear. Repeated failure every 2-3 years. Why ?
An insight into what TV engineers did, after speaking to Sony UK: (a) 0.47K resistor replaces L656 in line to Q651 B. (b) 0.33 ohm resistor added between L650 and Q651 E. A resistor also replaces L657. Still lasted only 2 years. Any better ideas ?
Sony TV Model: (FE-1 Chassis)
No power although relay operates (main p.s.u inoperative)
Check IC606 (STRF6654) for failure, also check resistors R659 (0.33ohms,3w), R660 (0.39ohms,3w), fusible resistor R603 (0.1ohms,0.5w) and capacitor C625 (100uF,25v)
Sony TV Model: (FE-1 Chassis)
No teltext just P100
This problem was caused by Q405 (2SC2412K) being s/c
Sony TV Model: KV27EXR25
No power, no raster, relay comes on
Found horizontal trans short
Sony TV Model: KV-X2183E (BE3B Chassis)
Not working, Stand-by indicator led flashing 6 times, Power supply ok
The tuner has loose connections, especially the ground points and the two SMD Icīs
Sony TV (FE-1 Chassis)
After about 30 minutes the set goes to standby, the LED flashes and TV starts again. After 1 Minute the TV Displays : Antenna connection failed!
Change IC101 of IF on A-Board. Order Nr. 875946647
Sony TV Model: KVA2942U
LED A flashes once, LED B flashes 13 times.
Bad solder joints on field IC1501 on back edge of main PCB
Sony TV Model: KX27PSI
Almost totally dead. No video or audio whatsoever. Only the clicking sound of two power relays when the set is turned on, and conversely at power down. The green/red lights on the front panel do appear. Repeated failure every 2-3 years. Why ?
An insight into what TV engineers did, after speaking to Sony UK: (a) 0.47K resistor replaces L656 in line to Q651 B. (b) 0.33 ohm resistor added between L650 and Q651 E. A resistor also replaces L657. Still lasted only 2 years. Any better ideas ?
Sony TV Model: (FE-1 Chassis)
No power although relay operates (main p.s.u inoperative)
Check IC606 (STRF6654) for failure, also check resistors R659 (0.33ohms,3w), R660 (0.39ohms,3w), fusible resistor R603 (0.1ohms,0.5w) and capacitor C625 (100uF,25v)
Sony TV Model: (FE-1 Chassis)
No teltext just P100
This problem was caused by Q405 (2SC2412K) being s/c
Sony TV (FE-1 Chassis)
Purple line down picture
Replace IC301 (CXA2060AS), part no. 8-752-082-35
Sony TV Model: KV2032
Keeps changing channel
Check voltage on D12 if below 4.8V then change
Sony TV Model: KV28WS2U
OSD volume bar present continuously. No functions available
Front panel tactile switches leaky. Replace same
Sony TV (AE2 Chassis)
Sound low & distorted when hot
Check -22v & +22v on plug PL505, if either incorrect check R627 27~ (goes high in value)
Sony TV-Vid Combi Model: KV-20VM20 (SCC-H16B-A Chassis)
Would not eject the tape
Replace Elevator activator rack (Broken) REF# A34 OEM# 9-908-164-01. - UL# 146T - Set MFG. by Goldstar
Similar To: Zenith TVR1920 & KV-13VM20
Sony TV (FE-1 Chassis)
No remote control operation
Check as necessary D203 (MTZJ-5.6B) on main pcb, D907 (MTZJ-9.1A) on pcb H1 or the remote control sensor IC900 (SBX1981-51), part no. 8-742-014-11
Sony TV (FE-1 Chassis)
No sound
This may be remedied by entering TT24 in the service mode, if fault persists Q202 (2SC2412K) could be leaky
Sony TV (FE-1 Chassis)
Pressing the screen format button displays wide, smart, zoom and 4:3 modes but settings have no effect on picure
Enter TT35 in the service mode to select a 4:3 CRT
Sony TV Model: KVJ29MN21
Unable to switch on with remote and no LED display at the front of set
Due to STBY 5v missing. Checked and found the 5v reg/reset IC002. (L78LR05D) was s/c, replace the IC to clear the fault
Sony TV (FE-1 Chassis)
No remote control operation
Check as necessary D203 (MTZJ-5.6B) on main pcb, D907 (MTZJ-9.1A) on pcb H1 or the remote control sensor IC900 (SBX1981-51), part no. 8-742-014-11
Sony TV (FE-1 Chassis)
No sound
This may be remedied by entering TT24 in the service mode, if fault persists Q202 (2SC2412K) could be leaky
Sony TV (FE-1 Chassis)
Pressing the screen format button displays wide, smart, zoom and 4:3 modes but settings have no effect on picure
Enter TT35 in the service mode to select a 4:3 CRT
Sony TV Model: KVG25M1
Dead
Found Q802 (C4927) short, replace with same type as no other types last
Sony TV Model: KVX2952U (AEIC Chassis)
Intermittent black and white picture, color disappears
Replaced IC TDA4580 and all ok
Sony TV Model: KVX2972U
On/Off switch popping out when pressed
On/Off switch push pad broken, repaired push pad and switch now ok
Sony TV Model: KV2062
Dark picture, No brightness control
1000V+ Missing caused by open circuit IK resistor Near to FBT
Sony TV Model: KVFX29 (FX Chassis)
White horizontal line (no vertical deflection)
Check / replace R548, R549
Sony TV Model: KVG25M1
Dead
Found Q802 (C4927) short, replace with same type as no other types last
Sony TV Model: KVX2952U (AEIC Chassis)
Int black and white picture, colour disappears
Replaced IC TDA4580 and all ok
Sony TV Model: KVX2972U
On/Off switch popping out when pressed
On/Off switch push pad broken, repaired push pad and switch now ok
Sony TV Model: KF60XBR800
No picture no sound timer light flash 44 fast 45 then 5 times then 5 times
Replace power block part # 1-468-510-11
Sony TV (FE-1 Chassis)
Procedure to display past error codes and the number of times they have occured (particulary useful for ongoing intermittent faults)
Enter the standby mode then press the on-screen display button (i+), 5, volume down, and finally the tv button. Note: the error count can be reset by pressing 8 then 0 on the remote control
Sony TV (FE-1 Chassis)
Intermittently displays bright red/green/blue raster then shuts down with led flashing 2, 4 or 5 times
Amazingly this was due to the CRT being faulty !
Sony TV Model: KV-21RXR1
Excessive brightness/ brightness control reverses its function
When setting brightness to minimum the pic became very bright, setting to maximum the picture became dark ! Found that R301 (270k ohms) near the jungle IC was o/c
Sony TV Model: KV21M1D
Picture disapears a moment after changing program. Raster/OSD ok
Replace TDA9806 ic
Sony TV Model: KF60XBR800
No picture no sound timer light flash 44 fast 45 then 5 times then 5 times
Replace power block part # 1-468-510-11
Sony TV (FE-1 Chassis)
Procedure to display past error codes and the number of times they have occured (particulary useful for ongoing intermittent faults)
Enter the standby mode then press the on-screen display button (i+), 5, volume down, and finally the tv button. Note: the error count can be reset by pressing 8 then 0 on the remote control
Sony TV (FE-1 Chassis)
Intermittently displays bright red/green/blue raster then shuts down with led flashing 2, 4 or 5 times
Amazingly this was due to the CRT being faulty !
Sony TV Model: KV-21RXR1
Excessive brightness/ brightness control reverses its function
When setting brightness to minimum the pic became very bright, setting to maximum the picture became dark ! Found that R301 (270k ohms) near the jungle IC was o/c
Sony TV (FE-1 Chassis)
Main p.s.u starts up then almost immediately shuts down
This was due to IC603 (SE135N) being faulty
Sony TV Model: KV-E2543E
Set goes to V protection mode (led flashes 13 times)
Check if there is saw signal at STV8379. If there is no signal, suspect dj in connector links between both motherboards, especialy the one very close to plastic frame
Sony TV Model: KV-A2923
Set starts, horizontal and vertical deflection work, HT ok, crt heaters ok, but no sound or picture
I turned the G2 voltage up and noticed a white screen with flyback lines, frame ok. I detected two badly soldered double diode rectifiers in the secondary part of the power supply ! I checked all other joints, and everything was ok !! success
Sony TV Model: KV-A2923
Standby led blinks slowly, a few times, chassis won't start up
I changed the vertical deflection ic type TDA8170 and I measured two leaky capacitors in the power supply. Better to change all 4 capacitors in the power unit, everything was then ok !
Sony TV (FE-1 Chassis)
Procedure to return EEPROM to factory default settings
Select programme 59, enter the service mode and at the TT-- prompt enter 49 then 24 (for UK)and 08 then switch off at the mains
Sony TV (FE-1 Chassis)
Main p.s.u starts up then almost immediately shuts down
This was due to IC603 (SE135N) being faulty
Sony TV Model: KV-E2543E
Set goes to V protection mode (led flashes 13 times)
Check if there is saw signal at STV8379. If there is no signal, suspect dj in connector links between both motherboards, especialy the one very close to plastic frame
Sony TV Model: KV-A2923
Set starts, horizontal and vertical deflection work, HT ok, crt heaters ok, but no sound or picture
I turned the G2 voltage up and noticed a white screen with flyback lines, frame ok. I detected two badly soldered double diode rectifiers in the secondary part of the power supply ! I checked all other joints, and everything was ok !! success
Sony TV Model: KV-A2923
Standby led blinks slowly, a few times, chassis won't start up
I changed the vertical deflection ic type TDA8170 and I measured two leaky capacitors in the power supply. Better to change all 4 capacitors in the power unit, everything was then ok !
Sony TV Model: KV24FS100
Will not power, led blinking
check R640 (1K 1/4w) if open replace ic600 (8-759-670-30)
Sony TV (FE-1 Chassis)
Procedure to return EEPROM to factory default settings
Select programme 59, enter the service mode and at the TT-- prompt enter 49 then 24 (for UK)and 08 then switch off at the mains
Sony TV (FE-1 Chassis)
Main p.s.u starts up then almost immediately shuts down
This was due to IC603 (SE135N) being faulty
Sony TV Model: KV-E2543E
Set goes to V protection mode (led flashes 13 times)
Check if there is saw signal at STV8379. If there is no signal, suspect dj in connector links between both motherboards, especialy the one very close to plastic frame
Sony TV Model: KV-A2923
Set starts, horizontal and vertical deflection work, HT ok, crt heaters ok, but no sound or picture
I turned the G2 voltage up and noticed a white screen with flyback lines, frame ok. I detected two badly soldered double diode rectifiers in the secondary part of the power supply ! I checked all other joints, and everything was ok !! success
Sony TV Model: KV-A2923
Standby led blinks slowly, a few times, chassis won't start up
I changed the vertical deflection ic type TDA8170 and I measured two leaky capacitors in the power supply. Better to change all 4 capacitors in the power unit, everything was then ok !
Sony TV Model: KV-M21TU (AE1 Chassis)
Intermittent rolling and loss of luminance, improves as set warms up
Dry joints on tuner / IF board
Sony TV Model: KV-21FS100 (BA6 Chassis)
No power, R640 open
Change R640, IC600 and associated electrolytic capacitor
Jvc TV Model: AV25S1EK
Field collapse
Resolder TDA3654 as joints appear good but on application of soldering iron show to be dry
Sony TV Model: KV1412
Set reverts to standby mode when switched on, because IC003 does not reset correctly
Replace IC003 on A board, IC type CX523013P
(Nigel Burton)
Sony TV Model: KV28WS3 (AE3 Chassis)
No sound or picture, in protection after 2 seconds
No 6.5 Volt on G-board. Fuse resistor PS605 is broken on G-board. Cause: bad contacts
Sony TV Model: KV21GMR1 MkII
No raster, flyback squeeking
Check the damper diode, in my case it was leaky, also check the electrolytic capacitor connected from the collector of the pin out trans.
Sony TV Model: KV-M21TU (AE1 Chassis)
Intermittent rolling and loss of luminance, improves as set warms up
Dry joints on tuner / IF board
Sony TV Model: KV-21FS100 (BA6 Chassis)
No power, R640 open
Change R640, IC600 and associated electrolytic capacitor
Sony TV Model: KV2020
Picture is folded over at the top and curled at the top left hand side
Replace C559 and C560
Sony TV Model: KV1412
Noisy picture
Replace relay RY481 on S2 board
Sony TV Model: KV1412
Vertical line at the left of the picture
Replace L506 on A board, replacement part number 1-407-366-00
Sony TV Model: KV-HF14M80 (BG-3S SSC-U21F Chassis)
Dead in standby mode, no primary voltages, led orange
Change uMICOM CXP86449-627S
Sony TV Model: KV25K5U (FE1/FE1A Chassis)
No sound or vision, front led flashing
Replaced line output transistor, resoldered dry joints on driver transformer. Also check for any other poor joints in this section. Have used a 2SD1878 as replacement, This seems to work ok as the Sony original is very expensive
Sony TV Model: KV2020
Picture is folded over at the top and curled at the top left hand side
Replace C559 and C560
Sony TV Model: KV1412
Noisy picture
Replace relay RY481 on S2 board
Sony TV Model: KV1412
Vertical line at the left of the picture
Replace L506 on A board, replacement part number 1-407-366-00
Sony TV Model: KV-2565MT (SCC-E64P Chassis)
Horizontal output transistor Q802 goes short repeatedly
C818 (1uF, 250v) had lost capacity, replaced C818 and Q802 and unit was ok
Sony TV Model: KVD-C21MF1 (SCC-K68A-A Chassis)
No sound and screen not appearing, B+ ok
No input on pin 5 of IC301 (MC44002P), R339 had failed, once replaced the unit was ok
Sony TV Model: KV-M1400D (BE2A Chassis)
Retrace lines on picture, 60V on RGB transistors
C700 (100nF, 250V) seems to be leaky, but main problem is R723 which had gone from 27R to 1.2M, both on CRT board
Sony TV Model: KV-M1400D (BE-2A Chassis)
Dead, after replacing ic601 (STR54041) and Q601 (BC637) standby led blinks red twice, then blank, no HV
Replace fuse p801 (ICPN15 - 0.6A 50V, TO92)
Sony TV Model: KV-2565MT (SCC-E64P Chassis)
Horizontal output transistor Q802 goes short repeatedly
C818 (1uF, 250v) had lost capacity, replaced C818 and Q802 and unit was ok
Sony TV Model: KVD-C21MF1 (SCC-K68A-A Chassis)
No sound and screen not appearing, B+ ok
No input on pin 5 of IC301 (MC44002P), R339 had failed, once replaced the unit was ok
Sony TV Model: KV32TS20
Dead no click, Q502, Q601, Q602 shorted and blown fuse 602
Change all the above parts and also check R647, C512, C525, D607, D608, D609, D610, D622, VDR601 off primary side of T605. I`ve also found T605 bad too. ToughDog, Sony has bulletin out on this model
