I have a Seiki SE551GS TV that is only 4 years old. 4 days ago the picture and sound went out while watching tv. I can turn on the TV as the red standby light changes to blue, but after that there is no picture or sound. I tried the Flashlight test, but have not seen anything. I did the hard reset as well with no success. A friend told me the Main Board needs to be replaced, so I looking for confirmation or any other input.

Televison & Video - Seiki