I posted much of the following to the Apple PowerBook Usage discussion, am also
trying here in search of much needed help!

I replaced the sound/ac card and the power switch in a 400mHz Pismo. The computer chimes and I can get the screen to light up with both AC and//or a battery (the battery also charges). The internal hard drive will not, however, spin up.

So I pulled the hard drive out of my 500mHz Pismo, 1 gig RAM (drive previously known to work) and tried to boot from it, same result. I then pulled the internal hard drive out and inserted my expansion bay hard drive (Yes! I have one of those great old rarities that currently houses a 60gig 5400rpm drive!) and the computer booted.

This morning I returned my hard drive to my Pismo and got the same results as with the 400mHz Pismo: no spinning, only the grey screen. If I try to boot into target mode, my computer shuts down. Also, as long as the internal drive is connected, my expansion bay drives (hard drive + CD-ROM) do nothing. I ran Disk Utility on the drive (after placing it in an external case and mounting it to my Sawtooth) and got the 'okay' but when I tried Disk Warrior, I was informed that the directory was way too messed up to fix. The drive does, however, mount when in the external case and I was able to copy all of my documents etc. to another drive (whew!!!!).

I am stumped. Could there be something with the sound/ac card that provides power to everything else, but not the internal hard drive? Can the internal ATA somehow short and screw up the hard drive ribbon? Or might I have missed a wire/connection??
Or????

Any ideas will be appreciated, thanks in advance.

Jan Georgen

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