I'm completely defeated, so I'm throwing this out there in hopes of someone more knowledgeable than I am will know what's going on here.
The PowerBook chimes, then plays 8 error tones. No sad mac or error codes appear, just a blank gray screen.
List of things I've tried with this machine:
Cleaning everything with IPA and reseating everything
Tested PSU voltage under load (7.56V)
Ran laptop without the drives
Removed internal battery (2.4V)
Inspected components for leakage and corrosion (none found)
Tried resetting the PRAM multiple times
Among others I cannot remember
I suspect a RAM module on the daughter card failed, but I have no way to test for this nor replace it at the moment.
What's going on with this thing?
