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All replies
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Helpful answers
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Mar 17, 2012 12:00 PM in response to Bruce Roseby BDAqua,Hi Bruce,
Can you count the beeps or flashes?
1 beep = no RAM installed
2 beeps = incompatible RAM types
3 beeps = no good banks
4 beeps = no good boot images in the boot ROM (and/or bad sys config block)
5 beeps = processor is not usable
In addition to the beeps, on some computers the power LED will flash a corresponding number of times plus one. The LED will repeat the sequence after approximately a 5-second pause. The tones are only played once.
Note: In this case, a flash is considered to be 1/4 second or 250 ms or greater in length.
http://support.apple.com/kb/HT1547
Is this a G5 by chance?
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Mar 19, 2012 11:18 AM in response to BDAquaby Bruce Rose,Thanks, mine was beeping 3 times and I had read this meant no good banks. That just didn't make any sense to me. Yes, this is a G5 Power Mac, the Quad 2.5Ghz version. Shortly after posting this question it started up fine, and ran all day fine. Today, however, once it crashed, but nothing out of the ordinary otherwise. Concerned something is still wrong, but hard to trouble shoot when everything is working!
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Mar 19, 2012 11:55 AM in response to Bruce Roseby BDAqua,If it won't start again...
If you're sure the RAM is good, try the Hair Dryer trick...
http://discussions.apple.com/message.jspa?messageID=13240047#13240047
https://discussions.apple.com/message/15223603#15223603
https://discussions.apple.com/message/15499912#15499912
https://discussions.apple.com/message/15613068#15613068
https://discussions.apple.com/thread/3270112
https://discussions.apple.com/message/16053892#16053892
No power light at all...
https://discussions.apple.com/thread/3692775?tstart=0
It can show on any G5, and even many other computers & electronic devices of the period.
http://www.macintouch.com/reliability/pmg5.html
http://lowendmac.com/ppc/power-macintosh-g5.html
And see this last one in particular...