Quote:
Originally Posted by old_coot88
That's a huge ripple in the B+ supply to the sync and horiz. osc areas, caused by a bad filter cap (or caps).
The sync loss appears to "come and go" due to the slight difference between the 60hz powerline frequency and the vertical sweep rate.
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Of course it is!
I feel like I should have recognized that
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Quote:
Originally Posted by earlyfilm
VTS,
You are in no way ready to start a horizontal alignment on this set until you fix this problem.
James.
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I figured that was the case. I knew enough to know this wasn't a normal state of affairs, just didn't put the puzzle together.
Quote:
Originally Posted by earlyfilm
A oscilloscope might be a help in narrowing the problem, especially if it is from a wiring error made while recapping.
James.
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I'd like to use my scope on this one to learn more about how it functions. It sounds like the problem could be coming from a bad electrolytic, a wiring error, or an HK short in a tube. I test every tube in every set I work on as one of my first steps so I will say that is the least likely candidate (of course not impossible though). I have replaced every electrolytic in the set so that is the next possibility, but the most likely would be a wiring error. I can look for a wiring error manually, but if I wanted to use a scope to check wiring error or bad electrolytic how would I do that? Bear in mind I have no formal training in how to use a scope at all, but a great desire to learn.