Power Mac G5 power problems...

Hello, on a quest to find a G5 computer, I found an early 2005 Power Mac G5 (2x2.7GHz). The first time I plugged it in and turned on, it works beautifully. The second time, I pressed the power button and heard a loud noise from the power supply. I replaced and this is what is happening now:

When I plug the power cable in, there is a small clicking noise about a second after plugging in, and the power led on the front of the machine flashes for the click. However, it does not at all depend on when I press the power button. When I unplug the cable, it makes the same noise about a second after I unplug the unit. I see a pale glow of the light output after unplugging it.

Anyone have any suggestions to solve this problem? It is part of a collection, that's why I want to do operational.

There may be defective capacitors or other power supply problems, including

overheating in the dust inside the power supply or air channels. And

If the device is cooled by liquid, other things may be involved.

Since all the PowerMac G5 power supplies are considered to be custom,.

to get a good replacement is a way hoped to improve the situation.

Unlikely as is, actually an inexpensive job.

Have you tried a SMC power management unit reset? Or reset PRAM?

• How to reset the SMU on a Power Mac G5 (late 2004) or Power Mac G5 (late 2005) - Apple is supported

To reset NVRAM (PRAM) see:

• How to reset the NVRAM on your Mac - Apple Support

Several links appear in the result of this research; some look promising:

https://DuckDuckGo.com/?q=Troubleshooting + G5 + PowerMac + power + supplies& t = ffsb & AI = web

I read about the noise, the PowerMac G5 can do when some power components

fails; Troubleshooting is involved. Somewhere I had a link to a source for official PDF
REPAIR, download for offline use. -I do not see if I can locate the item...

Apple Power Mac G5 (early 2005) manual .pdf

Apple Power Mac G5 (late 2005) manual .pdf

Apple Power Mac manual G5.pdf

Good luck!

Tags: Mac

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