I'm having some troubles with the combo drive in my PB G4 (12'' 1. gen.), it will not read any pressed (original) CD's, they are just ejected after a moment of "chewing". CD-R, CD-RW, DVD and DVD-R discs work just fine.
I read on Apple's support forum that it may be related to the focus mechanism. Can any of you guys give any insight into this? and can I repair it?