I am revisiting this set. Last night, I started the TV with first the T-Con disconnected, and then with the input board disconnected. Both times, the funky screen and sound persisted. (Obviously without a screen in the case of the disconnected T-Con) This means the mainboard is at fault, right? I can't imagine the backlight inverters could be causing this problem?
The TV occasionally randomly cleans up its act for a few minutes at a time, displaying a (nearly) artifact-free screen and clean sound, but it always reverts back to insanity minutes later. No obvious bad caps on the mainboard...but most of them are SMD caps and hard to 'read'.
Do you all think it's a reasonably safe bet that replacing the mainboard will solve the issue? I have my finger on the 'Buy It Now' button.
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Sony Trinitron Fan
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