Quote:
Originally Posted by Jon F
. Next step I think I will replace the crystal,...
Any thoughts? Anything I am missing? Thanks!
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If the crystal is bad, it won't cause a total 'no color' condition. It'll cause either loss of color sync (barberpoling) or kill the oscillator completely. If the osc is dead, the chroma signal will still appear in the picture, but as pure green, and it will vary normally as you turn the color control.
Total loss of color indicates the chroma signal isn't getting through at all. I would look at the chroma bandpass and burst areas first (loss of the burst signal will cut off the bandpass stage). If the bandpass and burst tubes are known good, check voltages on them against the schematic.