I have the following machine:
Processor Name: PowerPc G5 (1.1)
Dual 2.3 GHz
Starting 12/28/2011 After I came home from work the Machine would not boot up. The white light would light up, the fans would start spinning normally but there would be no chime and nothing else would respond (keybord, monitor, etc). After a few seconds the fans will start spinning and getting louder. I forced quit it by holding down the power button. I tried to restarted and would get the same results.
I tried the following:
Disconnected all devices/cables except keybord and monitor
Removed video card and put back in
reset the SMU
have not tried resetting PMU because the keybord was not getting power
removed all RAM
installed only 2 sticks of RAM
After doing all of the above to no avail, I put my ram back in (properly) and called it quits for the night. I unplugged the power cord from the back of the machine.
The next day after work I came home, plugged in the power cord and started the machine. To my surprise it bootted up just fine. I ran the utility tool to verify the disk and it failed (knowing that this is not the problem I decided to boot off the Installl disk and repair anyways). I hit restart and was back to the computer not responding and reacting like the night before (no response, then fans start reving). I tried to restart it a few times to no avail. Again I pulled the power cable out from the back of the machine and went to bed.
Today I came home and like the night before it started up, I booted of the CD this time and repaired the disk, re-verified and all was well. I tried to restart it and i'm back to the machine not responding.
Any help with this is hugely appreciated!! Could it be the pram battery?
Thanks - Frank