Re: Vizio M421VT LED no display

How I ended up fixing mine

I also have the Vizio M421VT television set. I lost video and sound at the same time while watching a movie off of my Blu-ray player. I tried power cycling to no avail all I got was a blinking Vizio logo no sound, no picture of any kind, and no backlights. I had a tech company come out to fix my TV they replaced the power board and mainboard which did not resolve the issue. They put my old parts back in and said it was an unrepairable panel issue. I was not happy about this I called them and asked them to...