I have a TV it's kind of old it was made in 2015. It's been working fine but all of a sudden when I go to turn it on it pops up the logo and turns the screen on then turns immediately off. I pull the motherboard out I don't see any blowing caps or anything like that but the board is a little dark like it got too hot could that have been the problem? should I just replace the motherboard or is there any way to repair it easily?​...