We own a powermac G5 that has had some problems in the past, but nothing like this. When we press the power button there is a chime and fan that shows everything is working up. A white screen appears with the apple sign showing that it is loading. After this screen has been loading for a while the computer just shuts down completely. Just so you know it is located on carpet, in case that has anything to do with the problem. Any suggestions ?
PowerMac
Hello, have you opened it up & blown the dust out lately?
If liquid cooled have you checked for leaks?
We might get clues with verbose mode...
Thanks for the advice. Our machine is not liquid cooled; I blew out any dust and took out the batttery for 10 min and put it back. Could it be the battery? I tried verbose mode... the screen with white words came up, but it did not get beyond verbose mode and then shut down on its own. Any ideas? I also tried resetting the PRAM.
Might be time to replace the PRAM Battery, 4 years is close to their lifespan, far less if ever without AC power, & can cause strange startup problems...
See which one your G5 has...
http://eshop.macsales.com/item/Newer%20Technology/CR2032/
http://eshop.macsales.com/item/Newer%20Technology/BAA36VPRAM/
Will pick up a battery and try that. Cheaper than taking in! Thanks for the links.
I'm not hopeful, but it's a possibility, waiting to hear how it goes. 🙂
Well it turns out it's the internal power supply and it would appear our G5 is finished. 😢 We tried booting it from the drive with a technician on the phone form our local mac shop. No luck. He says it can't be the battery. Thanks for the help though - glad there's someone out there with some helpful ideas.
Nothing to lose, try this...
If you're sure the RAM is good, try the Hair Dryer trick...
http://discussions.apple.com/message.jspa?messageID=13240047#13240047
https://discussions.apple.com/thread/3061091?answerId=15223603022#15223603022#15223603
https://discussions.apple.com/thread/2620983?answerId=15499912022#15499912022#15499912
https://discussions.apple.com/thread/3175959?answerId=15613068022#15613068022#15613068
https://discussions.apple.com/thread/3270112
https://discussions.apple.com/thread/3287993?answerId=16053892022#16053892022#16053892
No power light at all...
https://discussions.apple.com/thread/3692775?tstart=0
It can show on any G5, and even many other computers & electronic devices of the period.
http://www.macintouch.com/reliability/pmg5.html
http://lowendmac.com/ppc/power-macintosh-g5.html
And see this last one in particular...
https://discussions.apple.com/thread/3507385?answerId=16781690022#16781690022
Powermac G5 wont start up completely
