Q: Power Mac G5 Dual 2GHZ won't start

My Power Mac G5 dual 2ghz PPC, which was working has refused to start again. When I press the power button the light comes on, but only as long as I hold the button in. As soon as I release it the light goes out. There is absolutely no sound or sign of any activity at all. I tried resetting the CUDA button but no change. Could it be my PSU has failed? Any ideas?

Thanks all.

PB G4 1.33 Ghz 15 PB 170 8mg OS 7.1 Power Mac G5 Dual 2GHz

Posted on Mar 7, 2011 5:41 PM

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Q: Power Mac G5 Dual 2GHZ won't start

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by Kaynray,

Kaynray Mar 7, 2011 7:01 PM in response to Kaynray
Level 1 (40 points)

Mar 7, 2011 7:01 PM in response to Kaynray

A bit more info on my machine: Power Mac G5 Dual 2.0 GHz 2003
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by BDAqua,

BDAqua Mar 7, 2011 7:17 PM in response to Kaynray
Level 10 (123,865 points)

Mar 7, 2011 7:17 PM in response to Kaynray

Could be the PSU, do you have a multimeter?

See the second to last reply here by old comm goy...

http://discussions.apple.com/thread.jspa?messageID=12581046

Another thing you can do is pull the PRAM Battery, Power cord, Monitor & all peripherals overnight, replace PRAM Battery, Power & such, try the PMU & see if it starts.

Was this off AC power lately?

Might be time to replace the PRAM Battery, 4 years is close to their lifespan, far less if ever without AC power, notice Polarity when pulling...

See which one your G5 has...

http://eshop.macsales.com/item/Newer%20Technology/CR2032/

http://eshop.macsales.com/item/Newer%20Technology/BAA36VPRAM/
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Q: Power Mac G5 Dual 2GHZ won't start

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by Kaynray,

by BDAqua,

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