Had a TV that started to malfunction intermittently (Vizio don’t remember exact model). I bought it from Costco and when I called about fixing it they just sent me a new one. So I googled it and saw that it was actually common problem that the processor could overheat melting some of the solder causing a short. Solution was to literally pull the board and put it in a toaster oven at 400 for about 10 minutes to reflow the solder. Fixed the problem and I put a little 12v muffin fan behind the processor and it has worked just fine since.
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