I'm trying to fix a friend of mine's Tv. The brand and model are in the title. The problem is it turns on but just shows a blue screen with a "no signal" on it. I'm unable to change inputs nor do any of the buttons on the Tv do anything(other than the power button). The remote does nothing. I will say that when I plug in the tv to an electrical outlet a high pitched noise comes from the board/power supply. Would I be correct in thinking I need to replace this board?
Thanks for the bump.
I've seen the power board online for about $80 and I'd really like to know whether to take a chance on swapping it out to see if it fixes the problem. As I said, there is a definite high-pitched hum coming directly from the board but I'd like to be a bit more sure before making the purchase. The weird thing is, the sound goes away when I turn on the TV.