Re: XBR-55X850 turns on but no pic no 12v on t-con

I have a Xbr55x850c tv It does not turn on and there is no white led at the bottom which is usually white, checking the TV guide it tells me that I have to have 3 volts on pin 18 of pic16f527-1 / ss and I do not have them, according to Manuel I must to change that integrated someone can help me...