Quote:
Originally Posted by timmy
Ever since I accidentally let the hot red plate for like 40 seconds this is what I’m left with. Does this look like a bad damper. I am going to try a damper but I have both boost voltages so what’s this it looks like a bar generator but it’s not. Stumped again.
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This is some kind of interference. A 4X multiple of the Horiz Osc. Perfect bars
like that are from some Osc, you can see they are perfect repeating not waving
or anything like that. What happens when you change the Horiz. Hold?
Is it always there? Does not look like a bad damper. If you got good Boost V.
Damper is most likely good. But with respect to the bars, On the outside, could
possibly be Heater-Cathode leakage, or short? Just a guess.....
Unfortunately, this might be a job for Mr. Oscilloscope.....
Some frequency getting into video? Does it remain or change
with Brightness, or Contrast change...?
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