Chosen Solution
I picked up this old macbook to try and repair. The power button does not work, but I am able to start the motherboard by shorting the pin on the keyboard connector. The fan spins up, and the charger LED is green. The battery is removed. beyond the fan I have no signs of life, no logo or keyboard lightup, and completely black screen with no lights. Looking for any suggestions to get this going, thanks.
Not good ;-{ That means you have both a keyboard and logic board failures. Consider the costs of the parts to fix this 15” MacBook Pro Logic Board 2.53 GHz (recycled)15” MacBook Pro Keyboard, US 09-12 (v1)15” MacBook Pro Keyboard, US 09-12 (v2) MacBook Pro 15" Unibody 2.53 GHz Mid 2009 Logic Board Replacement