THIS ONE IS A KEEPER. I WILL START LOOKING FOR A REPLACEMENT CRT, JUST IN CASE THIS ONE IS KNACKERED.
8 MAR 2005. I REPLACED THE RIGGING I MADE FOR A DELAY LINE WITH A REAL ONE. THE FOCUS IS LOW. I TRIED SWAPPING OUT HORIZONTAL SWEEP TUBES WITH LITTLE CHANGE. I AM ONLY GETTING ABOUT 4KV ON PIN 9 OF THE CRT AND ABOUT 22 KV ON THE ANODE. I LOOKED AT THE PRINT AND SAW SOME RESISTORS OVER I MEG THAT I THINK COULD HAVE CHANGED VALUE. FOR NOW, I WILL RUN THE SET. THE PICTURE IS A LITTLE BETTER. UNFORTUNATELY, I WILL HAVE TO PUT THIS SET BACK ON THE RIG TO FURTHER DIAGNOSE THE LOW HIGH VOLTAGE. ONCE ANY HIGH VOLTAGE ISSUES ARE RESOLVED, I'LL DECIDE IF THE CRT NEEDS REPLACED OR REBUILT. I AM LEANING TOWARD THE HIGH VOLTAGE BEING AT FAULT, SINCE I COULD NOT GET PERFECT FOCUS ON THE TEST RIG. RIGHT NOW, THE PICTURE IS TERRIBLE.
2 OCT 2005 UPDATE: THE CRT IS DEAD. I AM LOOKING FOR A REPLACEMENT. I AM LOOKING FOR A 25XP22 OR EQUIVALENT. THIS SET CAME WITH AN ORIGINAL EQUIPMENT ADMIRAL 25SP22. AS SOON AS THE HIGH VOLTAGE KICKED IN, THE BREAKER BLEW. UPON DISCONNECTING THE TOP CAP OF THE 3DF3 TUBE, THE HV HAD A NICE HEALTHY ARC. I WILL TRY THIS ON THE TEST RIG. IF I GET A PICTURE, I KNOW THE CRT IS DEAD.
APR 2006: I LOCATED A CRT. I JUST HAVE TO GET TO CLEVELAND TO GET IT.
OCT 2006: I GOT THE CRT. THE SET HAS DEVELOPED A PROBLEM SOMEWHERE IN THE SWEEP CIRCUITS. IT BLOWS ITS BREAKER AFTER ABOUT A MINUTE OF OPERATION. I HAVE PUT THIS ONE ON THE BACK BURNER INDEFINITELY. I FEAR THE FLYBACK MAY HAVE GONE SOUTH. A REPLACEMENT WILL NOT BE EASY TO FIND. THEN AGAIN, IT COULD BE A CAP OR SOMETHING SIMPLE.