Chosen Solution
hello, quick question. I have a vizio TV model number M65-D0, came into my shop as it would turn off and on, showing the logo, then turning off over and over again, did a diagnosis and it seems to be the power board, however, after waiting for the same model of the power board to arrive, plugging it in and putting the ground screws back in, it continues to do the same thing, has anyone encountered this before? and I’ve tried putting the original board in, that didn’t work. could I have a bad motherboard also? if youve seen thing please let me know how it got fixed? also Tv is out of warranty.
@savfix sounds like some IC on the main board which is giving signals to the power board to turn things on (very simplified). Post some pictures of your main board (both sides) so we can see what you see. Adding images to an existing question