I just bought a used MBP and it wont boot. I tested it out before I bought it and it worked just fine, 5 minutes later I go to restore it to factory settings. I hit the apple icon and select shut down. It shuts down 10 seconds later I press the power button. No chime, no fan, no HDD noises, sleep light doesn't light up, black screen. The battery indicator light on the side works properly and says it has 3/4 charge. I plug the charger in and the light goes green to orange like normal. When I reset the SMC the charger goes to green then orange again. I have tried the tricks to boot it, including replaced the RAM, swapped HDD, cleaned the logic board, left it for 3 days with the battery out, still nothing. Tried connecting pin 5 with 29 and I can see a tiny spark but still nothing. Is my logic board likely fried?