G5 dual 2.5 don't switch on

[graphixmotion]

hi!
i changed the power supply on my G5 dual 2.5 ppc 6 months before,
(G5 was completly silent when switching on, no click sound of power supply)

i have again problem with this G5....
but this time when i swith it on, you can hear one click like in audio amplifiers, and the front diode flash one time only, and then nothing! no fan noise, nothing, silence...

who can tell me if it's again power supply problem? battery? or mother board?
or what it can be?
thanks

 

[666sheep]

Check for coolant leak first.

 

[raysfan81]

Check for coolant leak first.

I second this. With the G5 the liquid cooling and the PSU were the first to go. If you see rust around the CPU or in the bottom of the case then you probably have a coolant leak which was ,unfortunately, a problem with the later g5s. Too bad because they were one hell of a computer.

 

[OrangeSVTguy]

Try resetting the PMU or pressing the little button that's near the bottom memory sockets.

 

[graphixmotion]

pmu,coolant

pmu reset was done,
no signs of any leaks of the coolant (aluminium with G5 logo was removed)
the battery is new..

 

[graphixmotion]

hmm

ok i found!
disasembled processors with coolant pump, it's the liquid problem...i feel it on my skin fast...and not very well visible.
thx

 

[rickvanr]

ok i found!
disasembled processors with coolant pump, it's the liquid problem...i feel it on my skin fast...and not very well visible.
thx

Call Apple! My G5 had this same problem right before Christmas. They offered a free on-sight repair, but I didn't live close enough. I just had to take it to an Apple Store. So, free repair. That didn't solve the problem, so they replaced my machine with a brand new Mac Pro! 8core, 2.93, 8GB RAM, etc...


Call Apple!