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Old 02-18-2010, 01:12 AM
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Charlie Charlie is offline
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Join Date: Aug 2002
Location: Warren, TX
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I feel like I've been running around in circles chasing my tail. I can't really find anything else at this time causing the vert osc to lock in a 30 cps when I put the right resistor in there. So, instead of trying to make the circuit "right", I'll just make it "work" by leaving a 1 meg resistor in there.

If I wouldn't have noticed the original resistor being so far out of spec, I would have never known something was fishy.

The Zenith service notes had lots to say about the verticle and sync section of this chassis. It seems they had quite a few issues. The verticle integrator is one of those couplet units. I thought it was simply a disc capacitor at first... then noticed it had three legs instead of two. There's no diagram to build your own.
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