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How to recover a G5 after no wake from sleep System
Recently I was puzzled: my G5 crashed after trying it to get out of sleep. Crashed, as in a) no response, b) fans starting to blow like a 747, and c) display garbled.

The solution was to power down, then disconnect all cables to the G5 (just to be safe), open the cover and look for little grey switch on the motherboard. It's near the bottom left, behind the main fans, above notation "PMU."

With a paperclip, hold this switch for five seconds, connect all cables, start the Mac ... et voila! Everything works again.

Save that cold sweat for your deadlines.
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How to recover a G5 after no wake from sleep
Authored by: jedik on Jan 29, '04 08:52:02PM

Take care, you may crash the PMU circuit, what will render your Mac useless (it will need a new logic board). The right way to do it is to press it just *once* and for less than 1 second.

---
:: Jedi Knight ::
-- Mac Rules! --



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How to recover a G5 after no wake from sleep
Authored by: mike666 on Jan 29, '04 11:37:47PM
Yes, jedik is absolutely correct; DO NOT hold the PMU (or CUDA) reset button down for more than a second and don't press it more than once without plugging in the power and attempting to boot up. You also need to make sure you wait at least 10-20 seconds before plugging in the power.

robg, please update the body of this hint with a bold admonition before someone kills their logic board...

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