Currently Being ModeratedNov 15, 2012 10:06 AM (in response to JimmK)
Any other codes linked to it?
Currently Being ModeratedNov 15, 2012 10:32 AM (in response to BDAqua)
There are no other codes generated by the Apple Hardware Test. Thank you for the link. The fans are OK when the machine is running. They operated exactly like my other G5 when I ran the test on it yesterday. The G5 2.7 completed the extended test (it took a couple of hours) this morning and, on restart, acted just as I originally described. My next chance to start it up will be tomorrow.
Currently Being ModeratedNov 15, 2012 12:49 PM (in response to JimmK)
Do we get the same error if we wait a day & use AHT instead of booting up?
Currently Being ModeratedNov 15, 2012 1:00 PM (in response to JimmK)
I will be able to boot from AHT again tomorrow.
The only time I got an actual error code is when I ran AHT this morning. I will see if the same error shows up tomorrow. (Until today I had not run AHT).
[To clarify, I can't start it until tomorrow because the machine will not start up without a long rest. I am with the machine now, but it needs about 12 hours to get back in the mood to start up.]
Currently Being ModeratedDec 5, 2012 8:14 AM (in response to JimmK)
Interesting development: I installed a new graphics card (NVIDIA 7800) to see if that might improve things. It did not, but it did change things.
The machine at start up now issues a single long tone, then there is the normal start up chime, then nothing happens. The fans just blow hard and the start up does not ever really happen. Watching the innards, sometimes the graphics card fan spins during this process, sometimes not.
Another major difference is that with the new card, the power button no longer works to turn off the machine. It just glows very brightly and does not respond to touch.
Lastly, the machine DOES respond to command-option-P-R at start-up with the new card, but it just re-initiates the same futile sequence.
Really lastly, after about 6 or so attempts to get past the tone-chime-nothing sequence, the machine reverts to just turning on and blowing, without computer sounds.
Currently Being ModeratedDec 5, 2012 1:49 PM (in response to JimmK)
Is the 7800 an OEM 7800 GT or is it a WinPC card and has the 7800 been flashed to Mac ROM? If not, it won't work.
Did you connect auxillary power to the 7800?
Currently Being ModeratedDec 5, 2012 2:30 PM (in response to japamac)
I am sorry, it is a NVDIA 6800, not a 7800. I bought the card on ebay and it is Apple OEM and was pulled from a working G5. The thing looks pristine, not a speck of dust. There is no aux power input on this card.
Here is the listing with a picture:
Thank you very much.