Hello, I have research with picture problem with Sony Trinitrons, my model is 32" S66 last 3 digits. JPY trick with the screen knob seemed to work a couple of days then it started again. Then I took the boards out and go took close up photos of all the circuit boards and particularly looking for vertical IC, looking for bad solders, dried out caps and such. Just poking at most of the solder joints that seemed important, the TV is 'fixed' somehow. I just knew it was not picture tube because it worked intermittently. So with all the times I took of the cover and replacing it, it was worth 'poking' around the 8 year-old TV and fixing it without knowing which solder joint I poke at. Now I made holes in back cover so I could get to the screen knob back there easily if I ever need correction. Sony TVs has such nice pictures that it is worth keeping if it works. Huy

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