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G4 iMac fan noise
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Dedicated MacNNer
Join Date: Oct 2003
Location: London UK
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Offline
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Hi there,
I have a G4 iMac running 10.3.9
As of yesterday I have noticed that the fan/fans are running continually.
Would any one know of a fix to stop this happening?
As always - all knowledge is greatfully received - thank you.
voicebox
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"If you don't like the heat, don't go in the kitchen!"
17" Core2duo MacBook Pro 2.4Ghz 4Gb/160HD Snow Leopard 10.6.8 || 15" PowerBook 1Gz 1Gb/120 HD Tiger 10.4.11|| 24" iMac 3.06Gz 4Gb/2TB HD Yosemite10.10.2
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Moderator  Join Date: Oct 2001
Location: San Jose, CA
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Offline
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Always the first thing to do is to open Activity Monitor (Utilities folder), organize processes by %CPU, and see what stuck application, using the largest % of the CPU, is causing your fans to run. If it's an app you've started, simply quit or force quit it. If it's in use by the system, you can report back here and we can tell you what might be going on.
Steve
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Celebrating 10 years and 4000 posts on MacNN!
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Mac Elite
Join Date: Mar 2001
Location: Madison, WI
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See if it quiets down after logging out and logging back in. My wife's iMac does this sometimes--it's usually caused by a Flash object on a web page.
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Dedicated MacNNer
Join Date: Oct 2003
Location: London UK
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Originally Posted by ibook_steve 
Always the first thing to do is to open Activity Monitor (Utilities folder), organize processes by %CPU, and see what stuck application, using the largest % of the CPU, is causing your fans to run. If it's an app you've started, simply quit or force quit it. If it's in use by the system, you can report back here and we can tell you what might be going on.
Steve
Hi there,
Thanks for the reply ibook_steve,
I've checked with Activity Monitor and the % CPU seems to be OK with nothing out of the ordinary - all apps are running normally with nothing 'stuck' so there is no need to use 'force quit'...
I'll try Macola's advice and get back to you all later. The Cricket season has begun over here and today is the first day of the New Zealand test match, so as you might imagine my attention is focused on Lords Cricket Ground!!
best
voicebox
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"If you don't like the heat, don't go in the kitchen!"
17" Core2duo MacBook Pro 2.4Ghz 4Gb/160HD Snow Leopard 10.6.8 || 15" PowerBook 1Gz 1Gb/120 HD Tiger 10.4.11|| 24" iMac 3.06Gz 4Gb/2TB HD Yosemite10.10.2
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Dedicated MacNNer
Join Date: Oct 2003
Location: London UK
Status:
Offline
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Originally Posted by Macola
See if it quiets down after logging out and logging back in. My wife's iMac does this sometimes--it's usually caused by a Flash object on a web page.
Hi there Macola,
I took your advice and it worked!
Thank you for your help,
voicebox
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"If you don't like the heat, don't go in the kitchen!"
17" Core2duo MacBook Pro 2.4Ghz 4Gb/160HD Snow Leopard 10.6.8 || 15" PowerBook 1Gz 1Gb/120 HD Tiger 10.4.11|| 24" iMac 3.06Gz 4Gb/2TB HD Yosemite10.10.2
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Mac Elite
Join Date: Mar 2001
Location: Madison, WI
Status:
Offline
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Glad to hear it. Now, if only I could watch BBC cricket coverage here in the US 
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Dedicated MacNNer
Join Date: Oct 2003
Location: London UK
Status:
Offline
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Originally Posted by Macola
Glad to hear it. Now, if only I could watch BBC cricket coverage here in the US
You can, via satellite on Sky sports!!
Game heading for a draw by the way!
best
voicebox
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"If you don't like the heat, don't go in the kitchen!"
17" Core2duo MacBook Pro 2.4Ghz 4Gb/160HD Snow Leopard 10.6.8 || 15" PowerBook 1Gz 1Gb/120 HD Tiger 10.4.11|| 24" iMac 3.06Gz 4Gb/2TB HD Yosemite10.10.2
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