Macbook pro will not turn to almost have changed the motherboard and the power supply board

Hello,
A customer brought me to repair his macbook pro A1151, the computer flashed, I had to change the power board and the motherboard and the computer still does not turn.
The customer used a power supply with wire was déterrioré there were overheating the power supply board has traces of burns and a component of the motherboard is broken.
What may be another problem that prevents your computer from turning on?
Thank you.

Run an Apple Hardware Test:
http://support.apple.com/kb/ht1509
It may pick up some information that might give you a clue as to the unusual behavior.
Note: An error free AHT is not always definitive.
I still would go to an Apple store genius bar and have the MBP examined.  It will be done for FREE regardless of warranty status.
Ciao.

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