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G5 Tower Won't Start
| G5 Tower Won't Start [message #300585] |
Wed, 16 September 2015 17:53  |
g3-5-list
Messages: 45
Registered: April 2014
Karma:
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Member |
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Dual 2.5 MHz (2004), LCS
Went to wake my G5 this morning and found it had shut off during the night.
When I hit the power button it would click on then click off in less than
one second. The power light comes on and quickly fades. It repeated this
problem after several attempts to start.
I reset the SMU button using the Apple knowledge base article as reference.
Put it back together and hit the power button; this time one click and the
power light remained on, no fan noise, no chime.
Tried SMU reset again this time removing the PRAM battery and got back to
the click on click off situation.
Oh, I also tried reseating the cable from the power button to the
motherboard but forgot to test the PRAM battery voltage, which probably
does not matter.
My only guess is power supply failure. It there anything else to try. Right
now it sits unplugged with PRAM battery removed. I will try again Thursday
morning.
Help —glen
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