Hi all Apologies ahead of time for re-hashing this already dead topic. I finally got the logicboard in my G4 iBook replaced. Because I have already bought a new powerbook I intended to sell the iBook. After using it a handful of times I posted it for sale and left it (turned off) for a week. Now I have tried to boot it and it failed. The symptoms are exactly the same as they were before I had the logiboard replaced. This really pisses me off because I did pay for the labour to get it fixed and it was when I was trying to demo it for a buyer that it stopped working. I was wondering if anyone else has had the logicboard replaced only to have it blow out right away? Could the power unit be shorting it out or something? Also, apple agreed to pay for the part - but not the labour - what is the chance they will help me out again if it is a different problem? Thanks!