http://www.lickcreek.org/my-vizio-is-buzzing-2/
I bought a Vizio plasma over 5 years ago. Now the picture is doubled and it’s buzzing. What wrong?
The two top causes of flat panel failures are boards that fail and power supply failures. There is no cheap fix. Even if you could find the parts, it wouldn’t be worth fixing now that flat panel TVs are a fraction of what flat panel TVs cost 5 years ago. Ditch it and move on.