Television and Home Theater

I am hoping someone can help our Tv all of a sudden started doing this, its a fairly new tv a year and 1/2 old warranty has expired - when we click the on button the tv comes on for a brief second then shuts off both with the remote and manually pushing the button- if anyone can help would be appreciated have moved to a different outlet and tried but same thing happens

thanks in advance

MODEL#R52WH74 I tried the auto conversion and didn't take care of it and I replaced the conversion board also but it is still the same.

set doesn't converge - seems to have red bleeding on all screens.

When I run auto converge - cross never goes white - colors move on cross  with red squarea on top and botom of screen, and then cross goes away, but cross never gets white in focus. Any clue and does anyone have a service manual for my set ? Thanks, John   [email protected]