As you are all aware of, both the G3 and early G4 iBooks are really plagued with faulty logic boards. It seems changing out the logic board is like a universal truth when dealing with faulty iBooks. But I have yet to find out exactly _what_ the problem with these boards are. So what I want to know is the source of these problems. The more technical - the better
The closest thing Ive found so far, is a discussion on Apple forums http://discussions.apple.com/thread.jspa?messageID=1369476� indicating that the GPU was subject to corroding soldering and would eventually loose contact due to flexing (?). This would then manifest as the famous logic board error showing a black screen.
As can be read from the article, some have had success applying preassure to the GPU in order to make it "connect" better at its soldering points. I see they recommend applying preasure to the underside of the logic board, but the GPU is on the topside...
So if anyone knows more about these problems, and feel like educating me - please do. Links to other technical info is also appreciated.