(MBP, 15 in, 1.83 duo first model) So I'm stuck between knowing if my MBP has a bag logic board, worn out plugs going Into it, or other reasons. It will not power on at all. About 5-10 minutes prior it was perfect. The battery had power, and when its not plugged up the green light is very bright. I figure since the I/O board is connected to the Logic and it shows power, that it may indicate its ok. But i dont know, since its not directly hooked to it. Apple/Geniuses and Other shops just give me quotes on changing out the logic board after observation of it not getting power...never have said anything relating to "After Testing the logic board...." So I am wondering, whats the secret? how is it done? CAN it be done at home? or, does anyone know what the shops/techs use to test boards? Any answers would be greatly appreciated.