I have an iBook G4 14" -- the original model, introduced in 2003 -- which, after displaying the Apple logo and spinning progress indicator on startup, gets stuck on a blank blue screen. (Same colour as what a healthy computer would show as the backdrop at the login screen, but there is no cursor, and nothing ever happens.) I have tried booting it from several OS X discs and they all do the same thing, so it is not a software problem.
Apple Hardware Test identified it as a problem with the VRAM, with the error code "2ATI/4/4: 113-xxxxx-115". The error code corresponded to a section in the manual that said to reset the PRAM, PMU, etc., which I did to no avail. The manual says to replace the logic board if those do not work. Before I do, I wanted to see if this sounds to anyone like the infamous GPU problem that some iBooks had. Are the symptoms (blank blue screen & AHT error code) ever characteristic of this issue, or should I go ahead and replace the logic board?
Apple Hardware Test identified it as a problem with the VRAM, with the error code "2ATI/4/4: 113-xxxxx-115". The error code corresponded to a section in the manual that said to reset the PRAM, PMU, etc., which I did to no avail. The manual says to replace the logic board if those do not work. Before I do, I wanted to see if this sounds to anyone like the infamous GPU problem that some iBooks had. Are the symptoms (blank blue screen & AHT error code) ever characteristic of this issue, or should I go ahead and replace the logic board?