4,1 Power Issue

Trying to help a friend fix his 2009 cMP. The unit will not power on. So far, I've tried everything I can think of from resetting SMC, different power plugs and power sources, RTC reset, reducing the computer to a minimum configuration (removed hard drives, optical drive, processor tray and board, PCIe cards, Airport, Bluetooth, Battery, PCIe fan, Processor Cage and the front panel board. No dice, no nothing.

I can verify via instructions in the apple service manual that the OVTMP CPUA and...

4,1 Power Issue