Polaroid tla-04641c won't turn on

[Eric H]

Hi gang, got lucky before so I thought id try my luck again, not going to happen this time so I need some help!

This 46 inch Polaroid LCD clicks when it's plugged in, the red standby LED is lit but that's all.
Pressing the power button does nothing.

The PS Caps look ok, nothing obvious bad, I resoldered it anyhow but it's didn't help, there is voltage coming out of it (5v, 12v, 24v) so it may not be the problem.

The other board, I think it's the controller board has been messed with badly and I suspect it's where the problem lies.

I replaced two 2200mf @ 25v caps on it because they were the two oddballs and looked cheap, it didn't make a difference ( i used some 2200@6.3 volts because that's all I had on hand, figured they'd survive long enough) set still doesn't turn on.

I have a service manual but the schematic is illegible.

Not sure what the objective was to using solder to jumper the ground foils on this board, I used solder wick and removed it all, figured it didn't need it when it was new it shouldn't need it now.