Hi all I've been offered a faulty Macbook (2ghz core 2 duo 120gig) I haven't seen it in the flesh yet, but the owner tells me it powers up on battery power, but will not charge one, nor run from the ac adapter. The owner bought a new battery and was able to run the Macbook while charge remained. I am a novice as far as Macs are concerned, but it sounds like a faulty ac adapter, or some issue with the mag port or internal electronics. Have any of you any advice on what this might be? I realise worst case senario it may need a logic board, so will be purchasing it with that in mind. Regards. Den.