I have an iBook G4 1Ghz - It's been a great computer, but recently whenever I plug in the power adapter into it there's just an arking sound inside the computer and the iBook won't charge. For a while it would charge if you wiggled the power jack into a certain position, but now it won't even do that. It's not the power adapter; I'm certain of that - I bought a new power adapter and the same thing happens. I'd just send it in for Apple to repair, but my AppleCare expired 4 or 5 months ago. Is there any way I can fix this, or am I going to have to sell this iBook and buy a new one?