Quote:
Originally Posted by Gregb
I was just working on a very similar Hotpoint set that uses the same CRT as yours. I have a CT tester and my tube tested good so I went ahead and recapped the set and on first power up I had the same issue. Totally dark screen no matter what and I had good high voltage. All that was wrong was the ion trap needed to be adjusted.
Gregb
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The set has a low B+ circuit. There is a large value input electrolytic cap that is probably dried out and lost value. As a result, the set won't produce HV and do much of anything, but hum. A cap pulled from a scrap solid state color set would be close.
The CRT is a blown glass bulb, similar to the 7JP4. As a result, rebuilts were never available. The CRT is probably OK.
The tubes are rather odd-ball type with 300ma heaters. Some types, seemed to only be used in that particular set.