tv jitter problem

[mfink72]

I have a Westinghouse TV model Dwm55f1g1. Even with nothing connected, while viewing the menu screen, everything jitters slightly up and down. I have replaced both the power supply and main boards, but still have the problem. Any ideas or suggestions?

 

[hang-the-9]

Try another power cord and try in another room, use a good power surge protector if you are not.