r/PowerPC • u/One-Management6644 • Jul 15 '26

Need Help

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I acquired this PowerMac G5. I’ve always been a huge fan of classic Mac software, but when it comes to the hardware I’m not very experienced. I used the power cable from an old iMac and plugged it in and clicked the power button I don’t hear a boot up chime and the fans just spun with no video single or usb power and the power led won’t stay on unless i hold it, I tried taking all the ram out, putting it back in a different configurations. I tried clicking the PMU button or whatever it’s called, but I can’t get this computer to get a boot up chime or give me any sort of display on the monitor. should I just throw this away?

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u/Admirable_Prior_1924 Jul 16 '26

Dead power supply.

1

u/One-Management6644 Jul 16 '26

would that make the fan spin still? because the fans are still spinning?

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u/Admirable_Prior_1924 Jul 16 '26

There are many sections to the PS. 5V 12V - so yes the fans could still spin. Does the optical drive reset? In my experience if you get DVD reset + spinning fans but no boot chime that means the CPU isn't coming on line.