On 1/3/13 02:34 AM, Bill Connelly wrote:
Update: The PC Tech person reconnected all the wires, reseated the 11GB
RAM, and hard drive connections, and such, and the machine started up
for them. They were satisfied and sent it home with me. Then the same
symptoms occurred for me: Shut down with Temperature Monitor showing A
at 74°C, B at 34°C and eventually just a blank screen with LED red
lights 1 and 6, and no action. It bothered me that the PC Tech person
did not let it run a while ... (they were multi-tasking) ...
Given all this:
On Jan 2, 2013, at 10:51 AM, Bill Connelly wrote:
At times it would run a while, but I noticed cpu temps were bad for
cpu A 84°C and cpu B 24°C. So I shut it down.
This is really bothering!
Yes troubling, to say the least ... from a Diagnostic Dump found
recently in the G5s log:
Dec 30 06:41:24 Power-Mac-G5 kernel[0]: [7] "CPU A1 DIODE TEMP"
Type:"temp" Id:21 CUR:95.2048 C <<<<<<<<<< Note
Dec 30 06:41:24 Power-Mac-G5 kernel[0]: [9] "CPU A0 DIODE TEMP"
Type:"temp" Id:11 CUR:99.63488 C <<<<<<<<<< Note
What's the chance that the following (basically, deep clean the machine)
might solve the high temperature problem?
(from an e-mail to a friend offlist)
A final note for tonight. This reference may show what a possible
solution is:
https://discussions.apple.com/thread/2159019?threadID=2159019
Basically: Clean out the deeply hidden dust-bunnies ... Over-heating
solved ... machine will stay up.
Maybe this would do it: remove the cpu cover, and carefully clean,
Maybe remove the Heat SInk and attached cpus, and clean further.
Remove the cpu card and clean there, reseating with fresh thermal
paste and/or thermal pads. Check for Coolant Leaks. This is what I was
asking for today, in addition to making sure all the electrical
connections were secure.
I did blow out considerable dust when I first got it ... and cleaned a
fair amount off the radiator to the right of the double-fans which are
in front of the RAM slots. But I did not go deeper into the cpu area.
Perhaps a Certified Apple Technician, that knows about the Power Mac
Quad Core 2.5Ghz, is what is needed for the deep cleaning of the cpu /
cooling system check.
Latest Best Guess.
g3-g5 list Experts ... Comments welcomed. THX
Have you checked for house circuit load? We had a flakey breaker causing
power problems (mobile home w/ G5 + 1 bedroom lites (bedroom) + PC tower
-500 watt PS - WoW box + Window A/C + Microwave (in living room, dinning
room, kitchen)). Finally ran extension cords to other side of trailer
for computers, no problems now. I'll be glad when we get a real house
built this year.
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