IMac G4 Fan noise very loud, excessive speed

Hi there
My iMac is making a lot of fan noise, I have fun iStat pro and its saying my HD temp is at 106 F and I have already unplugged my power cord and reset my computer, but the fan noise is still very very loud, its hard to sleep in the same room with it also I am running leopard on it could that be an issue?
any suggestions or solutions?

Hello I just recently bought a imac like a month ago but it's starting to make this fan noise when it starts up..
Please if someone knows what's going or how can I solve this problem tell me!
I need help.

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My 2009 iMac is making a very loud,rapid pulsating electronic noise. It stops temporarily after adjusting the screen brightness or using certain apps. But it always returns

My 2009 iMac is making a very loud noise. It sounds like a rapid, pulsating electronic noise. It stops when the screen brightness is adjusted or when using certain apps. But it always returns and is getting louder. The unit was shut down for 4 months and the house temperature was set to 5C. It was powered up 2 weeks ago and ran fine for a while. Then in the last 5 or 6 days the problem started. 5 days ago I did watch a bike race for 3 or 4 hours from a quasi legal stream. I am not tech savvy. Just very confused as I've had a trouble free run so far. Ditto with my iphone5.

I would recommend taking it in immediately to your local Apple Store or AASP to be loooked at by an Apple Genius. I suspect you made a goof somewhere but diagnosing noises without seeing it is really difficult.

One of my fans is very loud, while the other one is fine, is this an issue?

One of my fans is very loud, while the other one isn't, is this an issue?

Hello there, Snake97.
The following Knowledge Base article provides a great step for fans running at full speed:
iMac: Fans run at full speed after computer turns on
http://support.apple.com/kb/ts1433
In order to correct the issue, reset the SMC. Your iMac should now start up and operate as expected.
Thanks for reaching out to Apple Support Communities.
Cheers,
Pedro.

By using iPhoto an Switch, the fan become very loud.

Hello.
I have the brand new MacBook Air 2013, with Intel i7.
Now when i using iPhoto an Switch, then the fan become very loud.
In iPhoto i have the problem, when i look for photo's.
When i change the bitrate of an mp3 in Switch, than the fan speed up i make a lot of noise.
I have make an SMC reset, but the problem is still there.
Anyone with the same problem, or have a fix for this.
Thanks.

You fan operates when a temperature threshold is reached, it sounds as if there is a slight noise, that one of the locking screws that bolts it is vibrating against its screw-hole or the board.
Call apple or go to the store and see about an exchange, I dont know how loud it is on your machine, but it should not be "making a lot of noise". Its sounds like an off balance bearing in the fan hub,......but without hearing it, i cant determine if its THAT problem, or merely a bolt rattle holding the fan assy. in place

IMac G5 fan noise

Hi MGW,
Baby Boomer recommended that I check with you about our iMac G5 fan noise since you used to have the same model. For a reference as to what all has been suggested and done go to: http://discussions.apple.com/thread.jspa?messageID=9810894&#9810894
I've done some internet searches and come across some other ideas on what may be the problem and if it is not too much trouble I would be very interested in your thoughts about the suggestions by DeathStalker13 --- please scroll down to #19 at this link:
http://forums.macosxhints.com/showthread.php?t=50158
Here is another link that I've found information about iMac G5 fan noise. I'd also like your impression about the methods that these people have done to solve the issue:
http://scienceman.com/legacypgs/00imacG5fanforum.html
I've also contacted a local AASP store and from just our telephone conversation they think just cleaning the fans and inspecting the computer which would take 1-1/2 hours at $95/hour should take care of the problem.
We'd really appreciate you opinion. Thanks!!!

Thank you so much for answering so quickly. I apologize for not being able to do the same. We had unexpected house guests and everything else was set aside while they were here.
This morning I have been researching trying to figure out how to disable Flash but so far I've been unsuccessful. We have a Power PC Mac OS X 10.4.11, Safari version 3.2.1.
Under the Safari "Help" it says, "Safari works with the plug-ins that are installed with Mac OS X. To see a list of installed plug-ins, open Safari and choose Help > Installed Plug-ins."
I checked and the Installed Plug-Ins list only has one "FLASH" listed - Shockwave Flash. I didn't know how to disable it or if I should.
You suggested changing to Firefox or Camino. We already swap between Safari & Firefox (version 3.0.12) for other reasons. Unfortunately, the fan noise is the same whether we use Firefox or Safari.
It was interesting that under Firefox "Help" they recommended disabling Adobe Flash plugin: http://support.mozilla.com/en-US/kb/Usingthe+Flash+Plugin+withFirefox?style_mode=inproduct
They said something about, "vulnerable to an extremely malicious exploit" and that until Adobe has an update, you can disable Flash. I followed the instructions but the only plug-ins I found were the following:
Default Plug-In
Netscape Navigator Default Plug-In
Java Embedding Plugin 0.9.6.4
Runs Java applets using the latest installed version of Java. For more information: Java Embedding Plugin. Run version test: Java information.
Java Plug-in
Java 1.3.1 Plug-in
Java Plug-In (CFM)
Java 1.3.1 Plug-in (CFM)
QuickTime Plug-in 7.6.2
The QuickTime Plugin allows you to view a wide variety of multimedia content in web pages. For more information, visit the QuickTime web site.
Shockwave Flash
Shockwave Flash 9.0 r159
Shockwave for Director
Macromedia Shockwave for Director Netscape plug-in, version 10.1.1
I haven't changed anything yet, as I'm not sure what I should disable. We have considered putting up with the fan noise since it isn't as bad since we cleaned the fans but if there is an easy fix we'd really appreciate your advice. Thanks!

Look at the film, the fan is very loud

look at the film, the fan is very loud
because someone has a solution

Watching a movie (film) puts a big load on the processor. The fan has to speed up to keep the processor from overheating. Put the MBA on a hard flat surface to get maximum cooling efficency.

My mac pro early 2009 graphics fan is very loud

I think something might be wrong with the video card. The fan is very loud at all times and gets louder on flash or video sites. The fan speed is usually double the other fans.

Try smc reset to see if the fan slows down.
Add something like iStat Pro (or iStat Menus, Hardware Monitor, etc.) to measure the fan speeds and some of the temperatures. Note none of these can measure the video card fan speed directly but knowing the various temps might indicate why it's thinks it needs to rev up.

My powerMac G5's rear fans are very loud?

Hi, I recently got a mint condition Dual 2.0 GHZ PowerMac G5. The computer boots perfectly, it's very fast even though it's got only 512MB of ram and so far, it has never crashed, I'm even posting my question with this computer, however, the rear fans are very loud, they're revving very quickly, and if I want to put it to sleep the fans are still very loud and it won't wake, I have to restart the machine. Does anybody how to fix it? I already reseted the PMU, I cleaned the entire computer with air, updated all the way to 10.4.11 since it had 10.4. Another thing I found was that when I opened the case to clean it, I noticed that a plug was loose, right near the ram. I have no idea where it should be connected or what is it for and I don't know if it's related with my problem, but I uploaded a picture of the cable to see if anybody knows where it should go.

Amed wrote:
Thank you for being quite helpful, and like you said, I checked the diagnostics on system profiler and I also got that it passed on diagnostics. I also checked my computer using techtool deluxe, it said that my CPU was working properly so I'm pretty much in doubt now. What do you think I should do next?
OK, your comment above in the singular is puzzling, and going back to your post with the System Profiler snip shows Number Of CPUs as 1. You should see the following, if both CPUs are recognized:
Machine Name:        Power Mac G5
Machine Model:        PowerMac7,3
CPU Type:                PowerPC 970 (3.0)
Number Of CPUs:    2
CPU Speed:              2 GHz
So the question is why is one of the CPUs not showing up? The system log listing points to a mismatch, which may simply mean that a thermal calibration needs to be run, but if the problem is only dealing with thermal calibration, both CPUs should show up in System Profiler. Since I haven't used Tech Tool since the days of Classic Mac, I am not familiar with how it reports things like a "missing" CPU, for instance.
Not sure whether we are dealing with a truly dead CPU here, a "wrong" CPU, or what. You can compare the EEE numbers against what should be compatible, for instance (see the DV Warehouse discussion of EEE numbers on any of the 5 CPU product pages, plus the listing of some G5 CPU modules for more information).
Finally, you can actually narrow down your model (there are two iterations with the same reported 7.3 designation) by inputting the serial number to the Chipmunk site model lookup and know for sure.

Mac mini fan is very loud when watching a dvd

Hi,
Just bought a Mac mini (2GBRam 2GHz intel) and when watching a dvd the fan spins very loud which gets very annoying! Is this normal for watching dvd's on the Mini as I have a Macbook with similar specs and there is not much sound from that when watching dvd's. I installed 10.5.1 on the Mini and the Macbook still has 10.4.11...Any ideas?

The reset is always worth trying, just in case the problem is in the system controller. However, I'm not sure that I'd blame MacOS itself for the problem, because it does not appear to be similarly reported elsewhere. As such, I'd say that if you can't resolve this with a reset, you may find the next best option is an erase and install of Leopard, followed by downloading and installing the 10.5.1 update from http://www.apple.com/downloads/macosx/apple/macosx_updates/macosx1051update.html
Of course, since an erase and install wipes the hard drive, it is essential you back up your data before you do this!

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I was wondering if anybody could point me in the right direction as what to do with the overheating problem i currently have with my A300D. I have had the laptop for under a year so it is still under warrenty but i am not sure where to go or what to do in order to repair it.
The problem: Around two months ago I noticed the fan running very loud and also the laptop becoming very hot. Now it runs so hot the laptop switches itself off completly. The heat being fanned out of the laptop is so hot! burns your my infact.
Has any one any advice they could offer me.
Thanks
James

Hi James
You wrote that you have the notebook under a year so my questions is did you already clean it?
The notebook should be cleaned every 3-4 months and I do this every 3 months. Every time I do it Im wondering how much dust comes out and after this procedure the notebook is a lot of cooler.
Here is an interesting Toshiba article about this:
http://aps2.toshiba-tro.de/kb0/HTD7A01ZZ000AR01.htm
Compressed air spray is really useful and you should check it yourself!!! ;)

27'' iMac fan running very loud?

I recently had to have a logic board and a video card replaced under Applecare, (get it, I have always needed my iMacs fixed). I have 'Carbonite' installed as backup. My activity monitor (when Carbonite is running) is showing that Carbonite is really working the 4 cores of the processor. Between 75 and 99%. My fan NEVER ran really loud before on this iMac, or my last two iMacs. I have used Carbonite as a backup for the last three years. The reason for the logic board and video card burning up MAY have been that the fan did NOT come on.
I'm going through a lot of phone calls with Carbonite to see if they have any answers. In the meantime I'm disabling Carbonite. So far the loud fan is not coming on.
Does anyone else have the problem of a very loud fan running? And why do you think that is?

Hello, let's see some temps & fan speeds please.
Get Temperature Monitor to see if it's heat related...
http://www.macupdate.com/info.php/id/12381/temperature-monitor
iStat Menus...
http://bjango.com/mac/istatmenus/
And/or iStat Pro...
http://www.islayer.com/apps/istatpro/

My iMac's fan runs quite loudly.

I only got the computer yesterday from Apple, but it was refurbished. It's an iMac 21" 2.7 1TB.

When you say that the 'fan runs quite loudly' do you mean that the fan is making an unusual noise such as a buzzing or clicking sound, or do you mean that the fans sound like they are running at full speed?
If the fan is making a buzzing or ticking noise then that could indicate that something is touching or rubbing against the fan. If you just purchased the iMac then I would contact Apple to arrange for a replacement.
If the fans sound like they are running too fast then it could simply need an SMC reset. To do this, power down the iMac and then disconnect the power cord for ~15 seconds. After 15 seconds plug in the power cord while making sure you don't press the power button. Here's an article that provides additional information on this condition and why it occurs.
http://support.apple.com/kb/TS1433

Imac makes fan noise when it turns off or goes to sleep

Hello,
I bought a new iMac from bestbuy during the last week of april 2013.
Recently when I turn the iMac off or put it to sleep, it begins to make a loud fan noise at the back above the place where the power goes into the iMac. However, the moment I turn on the computer the sound goes away.
I left the iMac on for a few hours thinking the noise will go away on its own but it didnt. Now I always have to turn off the iMac and take the power out of the wall in order for it to not make noise.
Does anyone know what I can do to solve my problem? I have tried the SMC reset and the Pram reset however it does not seem to do the trick for me.

I would recommend resetting the SMC at least 3x back to back, sometimes it does not work the first time. If you don't know how please navigate to https://discussions.apple.com/docs/DOC-3603 for detailed instructions. If that does not help, you have 90 days of free AppleCare telephone coverage or if you already bought AppleCare (VERY STONGLY RECOMMENDED) this will extend your 1 year warranty to 3 years and includes 3 years of phone support. If you are in the USA you can buy it from B&H Photo for as little as $122 vs. at BBY or Apple for $169.

IMac 20" Fan Noise

I am very fussy about computer noise.
I have returned a 17" iMac G5 once due to the annoying buzzing of the fans (specifically the hard drive fan) that sounded nothing short of an RC model airplane buzzing around.
So I thought I would hear the same with the Intel Duo Core, but would just deal with it this time.
WOW! What a surprise!
This computer is so quiet I could not believe it. When the fans do ramp up, they are a dull ambient sound which is fine with me. I just did not want the high pitched RC-sounding annoying fan noise from the previous G5 models.
I drove the CPU to 100% on both processors for over an hour (multiple times) and the fans are significantly easier on the ears than the G5.
So if you are hesitating on your purchase because of possible noise issues, I would say buy the new iMac.
You will be impressed.

I can be very critical and nit-picky about the computers I buy.
But I must say that Apple has left me speechless on this one!
No problems at all. I added another 512 meg ($100) from the local Apple Store to give me 1 gig RAM total. Naturally, everything is that much faster as well.
Mind you, though, that I have the 20" iMac Intel Duo Core with 128 megs Video RAM (not the seemingly problematic 256 meg).
Front Row works great with no problems.

Fans Spinning very loud.

This doesn't happen every day but its happened at least twice now where I've walked into the room where my computer and have it found the fans to be spinning super fast and making a very loud noise.
My computer was SUPPOSED to be in SLEEP mode.
What is this a sign of? How do I correct the issue? I had to do a hard shutdown of the computer to get them to stop.

Saw something about a Corrupt JPEG Data whatever that means unless its saying that one of the pictures I have saved on my hard drive is corrupt? I wouldn't even know how to locate the corrupted file.

IMac G4 Fan noise very loud, excessive speed

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