My first generation 17" Imac G5 is having start up problems. The protection plan expired atleast 2 years ago but I don't want to invest in costly apple repairs at this point. I have tried all the support recommendations (checked power cords disconnected peripherals, reset the SMU, checked LED...). LED 1 is the only light on. There's no fan. Before this, it would restart by disconnecting everything, including an external hard drive that seemed to cause power issues. Later a garay screen would appear on reboot, and now nothing will start and the screen is black. The capacitors on the motherboard appear to be normal. How can I tell if the power supply needs to be replaced? Any ideas?
Imac G5 power issue
- Thread starter mpurvi
- Start date
- Joined
- Nov 28, 2007
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- Blue Mountains NSW Australia
- Your Mac's Specs
- Silver M1 iMac 512/16/8/8 macOS 11.6
Try a new PRAM battery and reset the SMU. PS needs to be checked by technician.
- Joined
- Nov 4, 2009
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- Surrey/Hants border UK
- Your Mac's Specs
- "Cypher" Powermac G5 2.3 DualCore QuadroFX4500 23" cinema display
unfotunately power supply failures are a fairly common thing with G5's 
pig of a job to do as well because pretty much everything needs to come out of the casing to get it out!
pig of a job to do as well because pretty much everything needs to come out of the casing to get it out!
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