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Apple Computing Products:
macOS - Desktop Hardware
iMac G5 - blank Screen and High Speed Fan
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<blockquote data-quote="Mike1872" data-source="post: 982754" data-attributes="member: 140539"><p>I have ready similar posts, but nothing I have done will fix this problem. I have an original iMac G5 20" 512MB PowerPC OS X 10.4.11. It has been great for many years. Suddenly, for the past two months, if I leave it on and go away for 60 or more minutes I come back and the system is locked up (only holding down the power button for 5 seconds will shut it off) and the fan is running full speed.</p><p></p><p>I opened it up, went through the four light diagnostics, passed everything, but did the RESET anyway. BTW - the iMac is well ventilated and has no dust built up inside. It is still locking up after letting it sit unused for a long period of time. After more research I download the temperature monitor software. My CPU is running at 72 degree C. I don't know if that is too hot?</p><p></p><p>Any ideas for next steps? New power supply? Software patch? New power management card (is there one?)?</p><p></p><p>Thanks,</p><p>Mike1872</p></blockquote><p></p>
[QUOTE="Mike1872, post: 982754, member: 140539"] I have ready similar posts, but nothing I have done will fix this problem. I have an original iMac G5 20" 512MB PowerPC OS X 10.4.11. It has been great for many years. Suddenly, for the past two months, if I leave it on and go away for 60 or more minutes I come back and the system is locked up (only holding down the power button for 5 seconds will shut it off) and the fan is running full speed. I opened it up, went through the four light diagnostics, passed everything, but did the RESET anyway. BTW - the iMac is well ventilated and has no dust built up inside. It is still locking up after letting it sit unused for a long period of time. After more research I download the temperature monitor software. My CPU is running at 72 degree C. I don't know if that is too hot? Any ideas for next steps? New power supply? Software patch? New power management card (is there one?)? Thanks, Mike1872 [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
iMac G5 - blank Screen and High Speed Fan
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