My Panasonic Viera,model tc-p46c2

My Panasonic Viera,model tc-p46c2

My Panasonic tv, model tc-p46c2, turns on but turns off after 3 seconds. Started 2 days ago. Working fine before this happened. I have tried the fixes mentioned e.g holding the power and volume buttons down on tv and unplugging tv for a while then holding down power/volume buttons down while plugging tv in again. None of this worked.

ANSWERS:

"@patterlin

since you already tried to reset and have no post error blinking you will need to go ahead and remove the back from your TV. Unplug it of course. Take a look at the power board. Check for any obvious damaged components. Post some good pictures of your boards with your question. That way we can see what you see. Use this guide Adding images to an existing question for that. you will also need a multimeter to do some voltage checks. Start by checking the fuses on the power board (P board and A board is the main board)"