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Museum of the Game® & International Arcade Museum® Forums
I've been working on my spare CRTs and this one is giving me grief. I believe I've exhausted the flowchart. Here's what I've done so far trying to rectify the low and unadjustable B+ voltage.
Cap kit completed including new filter cap
New flyback
New B+ Potentiometer
New voltage regulator
Swapped in a used HOT for kicks
Base to Emitter .5V
Base to Collector.5V
D601-D604 all read .49V
R609 180 Ω
R604 1.1K Ω
Both fuses have continuity
Weird side note: if I test the B+ on the BJ post behind R609 then I get a little crackle of high voltage into the CRT. Odd?
Could the used HOT be failing under load.
What's next?