Hi people! Im new to this forum and would appreciate someone help me with my problem. I was gifted with an old Power Mac G5 2.3 Ghz Late 2005. After some research i realized i had a bad power supply (tested with multimeter and no current from nowhere) so i bought a new one off ebay ($130 shipped). I have successfully installed the power supply and gave it a shot. When i pressed the power button nothing happened. I went back with my multimeter to check if the computer had current now and noticed a yellow led came on as soon as i removed the clear deflector. That surely meant it had current in the circuit but still thats the only sign of life I have. No fans, no lights no nothing. I have been thinking I have a bad power button or something but not sure. Someone had this problem or know how to fix it? Any help will be greatly appreciated.
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Power Mac G5 2.3 Ghz Wont Power On
- Thread starter hectbp
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I think he means sell it, methinks the logic board is toasted.
Probably a lightening strike of some kind. Either way I would sell it.
Logic boards for the DualCores are hard to find in the right serial number range
He means Capacitor replacement, some early model G5 iMac and SOME G5 desktops suffered from Taiwanese knockoff capacitors being installed to the logicboard and with time. The capacitors would bloat/explode inside the machines making the logic board useless.
Unless you have some decent soldering/unsoldering skills and equipment I would recommend it. I did it to a G5 iMac and some were a nightmare to resolder in due to some of the surface mounted resistors surrounding some of the caps.
Oh how nice. I know how to solder but im not amazing at it. But may be worth the shot. How do i know what cappacitors are bad and where do i get the exact replacement
If they look bloated,tilting to one direction excessively (as in unnaturally from bloating) or leaking.
you can find some by:
Taking notes on the voltage & UF (Look for LOW ECR capacitors) that are installed on the logic board (they are all labeled on the side) and search thttp://www.mouser.com/ or Digikey (with the information collected) or search ebay for a full replacement kit.
Plenty of pics here : http://en.wikipedia.org/wiki/Capacitor_plague
I've not yet seen it on a Mac, but had a couple of PC server boards recapped after they became unstable. One is still going strong 5 years on...
I've not yet seen it on a Mac, but had a couple of PC server boards recapped after they became unstable. One is still going strong 5 years on...
the late 2005 models had an intial batch of bad 710W and 1KW power supplies theres a silent recall notice on the net somewhere and its in the service manual, I'd assume now its way out of the replacement window.
If your getting nothing at all, try reseating the processor a few times, and check for any bent pins on the logicboard socket, also did you re attach the power button cable? Also which led is lighting up yellow?
If your getting nothing at all, try reseating the processor a few times, and check for any bent pins on the logicboard socket, also did you re attach the power button cable? Also which led is lighting up yellow?
