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John:
All of the voltages at the CRT are a near perfect match for the voltages on the schematic. The crt filaments all look good. The screen circuitry seems fine - the voltages all respond to adjustments of the screen pots.
After studying everything a bit, the problem seems to be that the red gun is working fine, but the red information is not being modulated to it. The set has a great black and white picture. The adjustment procedure with the service switch and screen pots looks normal. I have a nice full screen of red when setting the purity.
So, should I be focusing on the color demodulator section?
BTW, the problem is not intermittent anymore. I can't get an red in the picture at all now. I may try swapping the 6CG7's around to see if that changes anything.
Thanks for the help! This is my first attempt to repair a color set, so I'm learning as I go along...
Wes
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