macinbot
Well-known member
I've got a few Power Computing machines I need help troubleshooting.
None of them seem to want to boot. I get no start up chime or video output from any of the machines.
I have two PowerBase 180 machines and a PowerCenter 120. The PowerCenter has booted without issue in the past, but has been sitting for a couple years unused (climate controlled). The PowerBase machines I acquired without knowing their boot status. This is first time I've tried to revive them.
They all power on. All do a cursory power-on poll of the CD-ROM. On power up, PowerCenter will poll the hard drive. The PowerBase machines don't seem to do that, but that may be an IDE thing?
Things I have tried:
None of them seem to want to boot. I get no start up chime or video output from any of the machines.
I have two PowerBase 180 machines and a PowerCenter 120. The PowerCenter has booted without issue in the past, but has been sitting for a couple years unused (climate controlled). The PowerBase machines I acquired without knowing their boot status. This is first time I've tried to revive them.
They all power on. All do a cursory power-on poll of the CD-ROM. On power up, PowerCenter will poll the hard drive. The PowerBase machines don't seem to do that, but that may be an IDE thing?
Things I have tried:
- Reseating all the cards including processor card, PCI riser, cache, and ram
- Pulling all ram and using known working ram from PowerMac 5400 (is there a preferred single ram slot?)
- New 3.6v battery installed
- Reset CUDA switch
- Used both Apple Performa Plus 640x480 DB-15 display and VGA monitors
- Cursory examination doesn't show any obvious signs of capacitor failure