Samsung lj92-01200A Y-SUS Board

[SevillianSTS]

Hello,
I mentioned my issue in a different thread, but decided I'd try and make one dedicated to my issue.
I have a lj92-01200A that came out of a Sayno 42" Plasma TV
I confirmed the lower Y Buffer had a shorted IC
I then found 3 shorted MOSFET's on the Y-SUS board.

I have replaced those mosfet's that were shorted G to D, but the TV power board still clicks on and then right back off a second or two later, and then the one green LED flashes 12 times over and over with the Y-SUS installed (no buffers connected)

I did notice that I can leave the power cable plugged into the Y-SUS and if I do NOT plug in the small ribbon cable below, the TV power will stay on.

I feel I'm so close, but not sure what else to check, any ideas ?

Thanks,

[SevillianSTS]

Re: Samsung lj92-01200A Y-SUS Board

Anybody want to step in and help a novice troubleshoot this?

[Videojoe]

Re: Samsung lj92-01200A Y-SUS Board

I have been working on that same board and its a real pain, there are many posts about it here. There are 2 diodes and 2 resistors that need to be checked on this unit also. If you click on my screen name to see my other post, these guys outlined it in detail. In addition to that, you basically need to check every single diode and fet on the board because sometimes you get a random bonus pop along with the usual parts that always blow. Really bad design.