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My G5 tower is one of the early models.
Today I turned it on. Immediately the drive bay fan was running at maximum speed. The Mac's temperature was cold as it had not been used for 12 hours. So the speeding fan could not have been due to the drive bay being overheated.
The fan never slows down.
Even after a restart it immediately spins at its maximum. Plus it stays at maximum speed all the time.
Anyone know what is causing this & how to make it work properly?
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Why is my G5 drive bay fan speeding all the time
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#2
dbflash 
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Posted 25 February 2008 - 10:58 AM
My G5 will do this from time to time.
I have to power it off and then restart it which will keep the fan from racing for a couple months.
I asked the tech where I bought my Apple and he said it was a know problem that has something to do with bad capacitors on the MB.
I have never messed with it because turning it off and powering back up has always worked.
Good Luck,
Danny
I have to power it off and then restart it which will keep the fan from racing for a couple months.
I asked the tech where I bought my Apple and he said it was a know problem that has something to do with bad capacitors on the MB.
I have never messed with it because turning it off and powering back up has always worked.
Good Luck,
Danny
#3
pkay
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Posted 25 February 2008 - 02:06 PM
If it does that after every restart, then you definitely have a problem. ---> boot from another drive (you may need to hold down the option key at boot, and be patient) to see if the problem is drive (or drive contents) related, or take it in to Apple if you can't figure it out.
My QuadG5 occasionally comes out of sleep and hangs, and the fans spin up and never die down. I have to do a hard reset, then everything is fine. This is rare, and I usually try to go back to the logs (Console) to try to figure out what application hung up.
My QuadG5 occasionally comes out of sleep and hangs, and the fans spin up and never die down. I have to do a hard reset, then everything is fine. This is rare, and I usually try to go back to the logs (Console) to try to figure out what application hung up.
#5
TopGun17
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Posted 01 March 2008 - 10:59 AM
Usually the this type of unusual fan drive bay activity means that your hard Disk Drive is either on the verge of failure or the fan ior temperature sensor has or will fail shortly, I would suggest purchasing A new brainless fan especially if this machine is a mission critical machine. Your Apple care warranty should cover the replacement part, that is if you bought an extended service plan at the time of purchase.
#6
Rugby
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Posted 12 March 2008 - 12:31 AM
just sold my G5 and I know what you mean; not that I had the problem but one time I had to force quit the machine as it locked with the fans blazing. Usually it revved up when pressed for power.
Some things worth trying before going the service way:
clean the OS sytem and update to latest version - could have something annoying in the Library initiating it
open it up, remove the fan (it is actually easy) and clean it and clean the grill on the case - you have no idea how much a computer attract in dust. There might be to much dust blocking the fan and grill - i.e. it overheats
Drives are not expensive and if it turns out the culprit is the drive might be an idea to replace
Some things worth trying before going the service way:
clean the OS sytem and update to latest version - could have something annoying in the Library initiating it
open it up, remove the fan (it is actually easy) and clean it and clean the grill on the case - you have no idea how much a computer attract in dust. There might be to much dust blocking the fan and grill - i.e. it overheats
Drives are not expensive and if it turns out the culprit is the drive might be an idea to replace
#7
TopGun17
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Posted 12 March 2008 - 05:37 AM
I am glad that I helped you solve your problem, however I have a slight nit to pick with yiou on your angle of attack on my suggestion of d ust being a culprit for the issue, which is I have cleaned out several family computers which were so caked covered in dust botnhb insside and out side the case that i had to yse bot a can of compressed air and a bottle of 70% rubbinmg Akchol to make sure that all of the point of electrical contact wereas goog as rthe day the machine arive obn my fathers dooer step.
#9
Grapho
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Posted 12 March 2008 - 12:17 PM
I am confused also, he claims to have helped you solve your problem, but I never saw you post anything about a problem. The original poster never got back to this thread, so who is he talking about.
How much did you sell yours for and what where the specks?
I am probably going to put mine in the market pretty soon.
How much did you sell yours for and what where the specks?
I am probably going to put mine in the market pretty soon.
#10
donaldberman
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Posted 11 November 2008 - 11:54 AM
Note my post G5 Fans - I have the same problem and employ the same solution - which is to power down and then up. I have a widget in my dashboard which shows temperatures rising to the boiling point and the fan going at top speed. I thought of the dust issue also but have not tried cleaning yet. But I note the response to you indicates others have the problem also and we all seem to have tried the same things. A failing component on the MB would be a serious issue for those of us out of warranty. Are there any reports on the new Mac Pro series?
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