Chosen Solution
My MacBook is showing NSOL right now. Was working fine a few days ago but now I put it in a new housing with new parts and now it does not turn on it used to turn on when in the new housing but now when I click the power button it does not do anything. It’s a MacBook 5,2 with a c2d. Now sometimes when I click the power nothing except for the hdd comes on. Not even the fan turns on.
Have you tried an SMC reset? Remove the battery and power adapter, then press the power button. Replace the battery and power adapter and try to restart the computer. If that doesn’t work, you may have either fried (as in burned the traces) or physically broke your logic board during the repair. You can obtain a MacBook Core Duo 2 GHz Logic Board from iFixit.
Huh, it seems that the problem was the keyboard. When I use the power on pads the MacBook turns on normal. There goes another 50 dollars for a palmrest and keyboard.