I know this is an old thread, but are you still trying to fix this set?
I have a complete set of panels from a 32" Vistron set, including a good power supply board GPAC-211424a rev 2.1
If you still want this PSU or any other boards, send me a PM.
I don't know if the other boards are the same in the 32" and 37" sets, but might be worth comparing numbers to see.
My panels were removed from a set that worked until the owner smashed the screen.