Although I will admit the logic board was already showing signs of malfunctioning when I did the following my experience has been even when the logic board goes bad You still have a red/green when You plug in a power cord.
After I connected the 2 wires together on an old power cord without the box that connects them I immediately heard what sounded like an electrical power surge. The second I opened the laptop and removed the logic board I could see the black all around the$10 magsafe that connects to the logic board. I already replaced the$10 part;. hoping that would resolve the problem and I would at least see the light when I plugged in the new power cord. Unfortunately there is still no signe of any red or green light.
What did I do to my beloved Macbook Pro Laptop? Do I need to replace the keyboard also? Those are the ONLY 3 parts that control the power to the laptop.
Any suggestions?
Rob Schmidt