Hi- Just purchased a used iBook G4, 1.42 ghz 14" notebook. AS IS, meaning broken. Thought it would be fun to troubleshoot it, since I already own one and have taken it apart. Here's what's wrong with it. I've gotten it to boot up. Curiously, it describes itself as a powerbook!? Unfortunately, I haven't gotten it to stay on for very long. *click* and it dies. I've gotten it to boot a few times, sometimes not, sometimes it only clicks and doesn't boot up. I don't know... I've gotten it to start up in target disk mode with no issues. FUrther issue with the computer: The trackpad doesn't work. I don't know how to trouble shoot that without replacing the topcase. Any ideas? Seems likely that it is a motherboard problem. How can I verify this? I've looked at some sites that document ibook mobo fixes involving reflowing the solder on one crucial chip. It just seems strange because if I hold down the chip and try to boot, it doesn't work any better.