HALLICRAFTERS MODEL 820
I FOUND THIS AT A LITTLE ANTIQUE STORE IN POWELL, OHIO.

  THE SELLER TOLD ME HE PLUGGED THIS ONE IN AND TURNED IT ON.  HE SAID IT HUMMED LOUDLY AND THERE WAS NO PICTURE.  I BOUGHT IT ANYWAY.

  I SOFT STARTED IT AND CONFIRMED THE FILTERS ARE DEAD AND WON'T REFORM.

  THIS WILL NEED A COMPLETE RECAP.  THE CRT CHECKED GOOD.  I THINK I ONLY REPLACED TWO TUBES IN THE SET.

  THIS ONE HAS AN AM RADIO BUILT IN AND I THINK IT HAS A PHONO INPUT IN THE BACK.

  THIS IS ONE OF MANY SETS IN THE 800 SERIES.  THE BUYER HAD A CHOICE OF A RECTANGULAR TUBE OR A ROUND ONE.  THE SAMS FOLDER FOR THIS SET SHOWS A ROUND TUBE SET.  MY TUBE IS A GLASS RECTANGULAR TYPE.  SOMETIMES MANUFACTURERS HID A ROUND TUBE BEHIND A RECTANGULAR MASK. 

  THE CABINET IS IN GREAT SHAPE AND WILL ONLY NEED CLEANING AND TOUCHUP.
AFTER DOING THE FIRST SOFT START AND CONFIRMING THE FILTER CAPS ARE BAD, I HAD TO PUT IT ON HOLD DUE TO AN ILLNESS AND LACK OF FUNDS.  NOW I HAVE DECIDED TO DO THIS NEXT, SINCE I HAVE THE SAMS FOLDER FOR IT AND I KNOW WHAT'S WRONG.  REPLACEMENT CAPS WERE ORDERED AS WELL AS A COUPLE OF TUBES THAT I DON'T HAVE REPLACEMENTS FOR.

  I WILL ADD FUSES TO THIS SET, ESPECIALLY ON THE 6AX5 RECTIFIER.  THESE TUBES ARE NOTORIOUS FOR SHORTING OUT AND WIPING OUT MAJOR PARTS, LIKE THE POWER TRANSFORMER.

  I DID FIND SOME DIFFERENCES BETWEEN MY CHASSIS AND THE SAMS.  THE SAMS SHOWS 2 POWER TRANSFORMERS, WHERE MY SET HAS ONE.  LOOKING AT THE PARTS LIST, THE REPLACEMENT (FROM HALLICRAFTERS) SHOWS THAT IT WILL REPLACE BOTH TRANSFORMERS (IF EQUIPPED).  MINE HAS ONE.  I THINK THIS MAY HAVE BEEN A PRODUCTION CHANGE.  THE VERTICAL OUTPUT TRANSFORMER IS IN THE SAME LOCATION ON MY CHASSIS AS THE SECOND POWER TRANSFORMER IS ON THE PRINT.
THE RIVETS HOLDING THE VERT OUT TRANSFORMER CONFIRMS THIS.

  I FOUND TWO WIREWOUND RESISTORS ENCASED IN CEMENT.  THOSE WILL BE REPLACED.  ONE HAS CRACKS, AND THE OTHER IS BEING REPLACED OUT OF PRECAUTION.  I MAY BE REPLACING GOOD PARTS, BUT IT DOESN'T HURT TO USE FRESH COMPONENTS.

THE PLACE WHERE THE CHEATER CORD GOES IN BROKE SOMETIME AGO.  THE LINE CORD WAS SPLICED TO THE EXISTING WIRING.  I HAVE ORDERED A NEW RECEPTACLE AND WILL USE A PROPER CHEATER CORD.

TWO OF THE KNOBS ARE MISSING AN INSERT, CAUSING THEM TO BE LOOSE ON THE SHAFTS.  I WILL MAKE REPLACEMENTS.

  THERE IS ONE SMALL GOUGE ON THE CABINET.  I WILL TOUCH IT UP.  THE CABINET WILL BE CLEANED AS WELL AS THE CRT AND SAFETY GLASS.

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