My Powermac 2.5 Quad recently shut itself down while I was using it.
I was alarmed until I looked at my APC Back-UPS XS 1000 (a relatively
expensive battery backup unit) and discovered that it was switching
itself from line power to battery power and back for no reason. Three
other identical battery backup units in the office were operating
normally so I did not suspect bad electrical power. After the G5 was
moved onto another battery backup the problem went away.
If you are hooked up to a battery backup unit be sure to check to
see if it is operating correctly.
================
On Jan 3, 2011, at 4:25 PM, Doug McNutt wrote:
At 10:55 -0800 1/3/11, Leo Hoyt wrote:
I have a dual 2.7 Ghz PPC G5 w/ 4.5 GB ram. The machine recently
started powering off without warning. Is this signs of a power
supply
failing? If so how hard are the power supplies to replace in these
towers?
Don't overlook the possibility of a problem with your power cord or
the surge arrestor it's likely hooked to.
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