One dead G4 (Mirrored Drive Doors) power supply. There's nothing visibly wrong that might have been an easy fix, and the PSU is pretty densely packed with a lot of silicon caulk applied to keep components from shifting. Better to start from scratch with an ATX power supply...
I posted a question in the forums about repair of a cinema display 20-inch, whose DVI connector was broken off. I finally have the solution and a working Cinema display again and as promised in the thread I would post the info regarding what color is what pin. So here it is.
Chances are that if you're reading this, you have an iBook that isn't working properly. For the last two years, I have been supporting a deployment of 2k plus iBook G4 12 inch computers. If there is an issue that could rear its head on these machines, chances are good that I have found it. I'm going to break this guide up into a few sections - symptom charts, what parts work in what machines, and whether it's worth doing the work yourself.