Re: Lg plasma problem please help

I really appreciate your help and advice! I was leaning towards just replacing the entire power supply but I got thrown off because of how the tv tries to turn on simply by plugging it into the wall. I found some schematics for this and it seems like the power supply gets a standby signal (ground) from the main processor. If this ground is floating (missing) it will automatically try to boot up when plugged in. And this is what it's doin? So I thought that maybe the main processor pcb is bad but I'm not sure?

Hello all, I have an lg 50pk550 plasma tv. It's worked
Fine for about 2 years now. A couple days ago, I tried to turn
It on and it clicked, the screen lit up and it looked like it was
Going to turn on like normal but then it clicked and shut
Off. After a few seconds it clicked again and tried to turn on again
All on its own. I removed the back panel and could not see
Anything obvious (no blown caps, resistors, fuses etc).
I grabbed my meter and began checking voltages and this is
Where I would like to pick someone's brain with some expertise...