Vizio XVT373SV won't turn on. Flashing logo on frame.

Hello,

My TV has a black screen and when I plug it in the logo flashes. It starts off as amber, then blinks amber/white for about 20 seconds, then goes solid white, then turns off. Then back to amber and repeat. The screen never turns on. After following many different threads all over the net, I eventually bought and installed a new t-con board, and just today tried a new power board. Neither new piece has fixed it. I’ve tried holding the silver button on the side for 30+ seconds, then plugging it in. I’ve held that button while plugging it in, and just about every other combination of holding/plugging in. I’m at a loss as to what else to try. You can see a video of the problem here: https://youtu.be/k8FFY6-4s8Y

The original issue was a flickering/solarization of the screen. Here are two videos of that: https://youtu.be/mFMcTP0o-yk and https://youtu.be/cCVhPPrGOxY About a month after the screen started doing this, it just went black and the logo started its flashing routine. I’m just now getting back to it to try and figure it out.

I’m guessing that it would cost more to take it in to be serviced than it would be to buy a new TV of this same size. I’ve already put about 50 dollars into the new two circuit boards, and don’t feel I want to spend much more. So I’m hoping to get some other ideas to try before I have to trash it.