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I honestly had given up but the latest suggestions, especially Chad's idea to disconnect leads, made me pull it back out. And, what can I say: now it won't act up! One little spark when I tried it with hv and nothing else. I ran it an hour without problems and then last night I ran it from 8-midnight. Was it some loose or close wire that I moved away? (or component?) Or maybe just dumb luck? I'll keep my fingers crossed-I know chances are good it will come back. I tried pushing on the chroma board to see if it would act up, but I admit I didn't push very hard-I hate to look for trouble!
With the set acting right I set to work on the color problem. I did a quick setup )purity, basic convergence) & came up with a very nice bw picture. Tuning the station until the video was shot got me color but I couldn't get color on a decent pic. The IF coils had plenty of "screwdriver drift" to begin with so I stirred the pot even more. I did finally find a way to get a real, full color picture, though its not right: tune in a strong station just right, turn the agc a little too far into overload, adjust the coil in front of the 6KT6 (?memory?) and, voila, color, overloaded, but color. Well, I admit I'm in over my head when it comes to correctly aligning the IF. I can handle the ACC, etc., and right now all I've done is turn the coils until the color (when its there) stays put and is correct. It is encouraging to see that the set can produce a color pic if it wants to. Now if I can just make a color pic when I want it to! The bw pic when properly adjusted is very strong so I really think this baby could give a great color picture if I can work the bugs out.
(note: all 6GH8's are NOS GE tubes)
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Bryan
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