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I unsoldered C204 and tested it on my EICO 950B cap checker, and it is fine. I also disconnected the line that I was using to inject a video signal, in case that was introducing noise.
With the IF reconnected and a signal coming in through the antenna, I can see rolling color bars when using a color bar pattern. I was never able to see them before with the IF connected, only the static "colorless bars." The waveform at L42 is still clean and stable, so I conclude the oscillator is definitely running.
Tomorrow is another day . . . .
Phil Nelson
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