g4 quicksilver startup problems

[bfreer]

Please help me
my G4 quicksilver has resently decided that it doesnt want to work. when i press the power button the light and fans come on but then cut out again after about a second. any ideas?

 

[bartelby]

I had a problem similar to that with my QS. My problem was that I had too many buss powered USB devices connected to a PCI USB2 card.
Have you tried resetting the PMU (a little button on the mother board, right next to the internatl battery)?

 

[bfreer]

I had a problem similar to that with my QS. My problem was that I had too many buss powered USB devices connected to a PCI USB2 card.
Have you tried resetting the PMU (a little button on the mother board, right next to the internatl battery)?

yer i tried it a few times with no luck
and i have now pulled the machine out from the desk so nothing is plugged into it apart from the power and monitor

 

[macsg]

G4 quicksilver startup problems

i had the same problem and i tried almost everything.
it resolved itself by imobilising the big fan with a pensil (under the power supply) for a second or two, while starting up.

 

[mr1970]

Have you checked the voltage on your PMU battery? Replacing that will cost a couple of bucks and has worked for me on two different machines.