Mac 8500 Noisy Fan

The fan in my Mac 8500 is getting progressively noisier. A rattly type sound.
Can it be replaced?
The fan appears to be an integral part of the power supply as near as I can tell. Is the fan a separate item or does the entire power supply need to be replaced?
Where could I find replacement parts?
Thank you.

If you "run the numbers" off the label for the original part, you will often find the specs online. Exact replacements are often available -- in the handy 10,000-pack.
If you want somewhat fewer than 10,000 parts, I suggest you take the specs for airflow and noise generated in hand and look at this site, because it has good variety and can help you converge on exactly what you want -- whether you buy their offerings or go on to search elsewhere:
http://www.buyextras.com/dc12vfans.html
Note: fans with an additional yellow wire are compatible with fans that use only red and black. The yellow wire is an RPM Output from the fan. The Mac does not use it, and it can be safely ignored.
Message was edited by: Grant Bennet-Alder

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Noisy fan Mac mini 3.1(2009)

Hi,
I am the user of mac mini 3.1 and I've upgrade the RAM to 4G and now run the Marverick.
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What is the possible causes?
I've checked the activity monitor and only about 20-30% use of the CPU and about 2-3 G for the RAM.
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Nelson Fong

Thanks for reply.
I've tried this but problem persisted.
I think this may be due to the hardware that can't support the new OS.
Or some apps that are not supported by the new OS and so increase the burden of the Mini.
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Maybe I should consider to change a new Mac mini. New version of Mac mini seems to be sold very soon. I will wait and see.

Replacing noisy fan in MDD Mac

Hi all,
I've read the MDD models were called the wind tunnel machines due to the noisy fan. Has anyone replaced the fan in a MDD to make much quieter? My MDD has been shutting down without warning at times and I was wondering if it can be a fan issue. Thanks, web dude

Hi-
Has anyone replaced the fan in a MDD to make much quieter?
A very common mod. Google will yield many reports like this one below:
http://www.xlr8yourmac.com/systems/g4mirrored_drive_doors/noise_reduction/g4_ddr_noisereduction.html
My MDD has been shutting down without warning at times and I was wondering if it can be a fan issue.
Usually due to overheating of the processors.
Applying new thermal compound to the processor heatsink is a good idea.
Running CHUD tools to allow nap mode is also important for the MDD to run cooler.
http://www.xlr8yourmac.com/feedback/MDDCHUDfeedback.html

G5 Dual 2.7Ghz Constant Noisy Fans

Hi there,
I'm really annoyed with this whole situation since Apple don't appear to have publicly acknowledged the noisy fans/chirping noise problems G5 users (with varying spec hardware) have been experiencing and posting about for over a year.
Anyway, here's the deal:-
My main spec is as follows: G5 Dual 2.7Ghz/4.5GB RAM/Mac OS X 10.4.6 installed on the shipped Western Digital 250GB SATA, 2nd internal 250GB SATA (Maxtor DiamondMax), 20" aluminium Apple Studio Display.
Since I performed the upgrade to 10.4.4 back in early May 2006 the fans have been constantly on as soon as the login window appears and remain at full pelt all the while the machine is on - clearly unacceptable and unusable. Fortunately for me it's not my only Mac although this is besides the point as I have now had an unusable machine for over a month and not been able to do any work with it - it is a production machine used for making music with Logic.
The bottom line is that I've not been able to make any music!
None of the suggested resolution methods that have been written about in the forums or elsewhere on the 'net (eg. installing CHUD tools etc) have made a blind bit of difference.
Furthermore, I have always had the chirping sounds since I purchased the machine in person from the Apple Store in July 2005.
For the past few weeks I was convinced that the fan problems were caused by the 10.4.4 update (when it started) and that the subsequent 10.4.6 update hadn't cured the problem.
Prior to this, I hadn't run a software update since December 2005 purely because I had heard horror stories from friends and other G5 users posting to forums etc. - if it ain't broke, don't fix it right?
I haven't really had the time to devote to trying to sort the problem out but I decided earlier today that tonight was the night to have a look at it.
Having spent all evening trying various things I am now convinced it is a hardware problem as opposed to being software related.
Here's what I tried earlier with the machine spec as above:-
1. Booted the G5 with Disk Warrior 3.0.3 boot CD
2. Ran all Disk Warrior tasks on both drives - eg, 0% fragmentation
3. Re-booted, fan noise still there from login window
4. Manually ran daily, weekly and monthly CRON jobs from Terminal - OK
5. Ran Disk Utility on main HD, repaired permissions - OK
6. Ran Disk Utility on secondary HD, verified disk - OK
7. Powered down
8. Removed all leads incl. power, monitor, all USB and Firewire
9. Removed 4GB RAM leaving 500MB stock RAM, reset the PMU
10.Ensured the removable fans (covering the RAM) were re-seated firmly
11.Replaced plastic 'door', attached monitor (DVI only) and keyboard USB
12.Re-booted, same problem, fan noise still there from login window
13.Attached Firewire HD with Mac OS X 10.3.8 installed
14.Selected Firewire HD in the Startup Disk system pref
15.Rebooted into Panther, same problem, fan noise still there from login window
AAAAAARRRRGGHHHHH!!!!!!!!!!
The last time I booted my G5 from the Panther Firewire HD (which incidentally hasn't been used since) was prior to me doing the 10.4.4 update on my G5's main boot drive and there was NO fan noise whatsoever!!!!!
Clearly I need to call and speak to someone at Apple tomorrow as the G5 is nearly one year old and I need to get this problem sorted out before it's out of warranty.
It just seems an odd coincidence that the problem started when it did!
Anyway, if any Apple techs or other G5 owners with a similar setup (specifically the dual 2.7) are reading this I'd appreciate a response or some advice for other things to try.
I'm just really frustrated and a little annoyed that having been a very content Mac user for years this is the first and only time I've ever had a problem with a piece of Apple kit.
Like I said at the top of the post, I can't believe the lack of acknowledgement on Apple's part as it would appear to be a known/common issue.
Just my £0.02.
Thanks for reading/listening.

Ok, take a look on your plastic shield, one of the bottom "tabs" should have a shiny metal coating of some sort, if it's gone or moved, then this could be the reason your fans are going "turbo".
If your fans are just at a high speed all the time, consider lowering your room temps to about 75ºF and see how it goes after a few hours/days.
It's most likely a wise decision to have the G-folks take a look at it anyway before it gets out of warranty. you might need a fan calibration or firmware change.
You still have a chance to buy AppleCare and get it registered before the 1 year warranty expires.
The Dual 2.7 is the hottest PM of the bunch, overclocked I would think.
You said the WD drive was OEM correct? Came with the PM stock?
Because the newer WD drives now have a new SATA spec that requires a SATA PCI card to function correctly in PM's.
Have you tried a complete reinstall of the OS?
Did you upgrade Tiger over Panther? (not good, less secure, previous exploits)
Do a backup, a clone of your boot drive to a external using Carbon Copy Cloner (check in the forums for their advice!) would be better.
the c boot off of Tiger install disk (not upgrade version) and from the installer menu Disk utility Erase w/Zero the boot drive (takes longer but writes are more reliable) and then reinstall Tiger, software update till clear, reinstall iLife '06 and all apps from fresh sources, avoid Migration Assistant (too blind, no app DRM copies) install files and see if your fan problems return.
Sometimes if Mac OS X is not operating correctly it won't tell the hardware to turn the fans down.
Don't install any OS/root level/admin password type programs or hacks until you've had a chance to clone that pristine puppy to a external drive (preferably 2) and keep it disconnected for safekeeping.
It's takes practically no time to option boot off a clone to recover, repair or reverse clone to the original drive. If your exploited, first c boot and Zero the infected drive before hooking up and option booting off the clone of course.

Noisy fans on all the time

I have come over from the dark side today (PC to Mac switcher). I got a second hand Mac Pro 2.66 quad with four HDD and 4GB ram and i seem to have very noisy fans. I did find this article
http://www.amug.org/amug-web/html/amug/reviews/articles/intel/fan/
which mentions that extra drives cause more noise due to extra heat and less airflow but this is just silly, they sound like they are on full ALL the time.
I have alread tried resetting the smc_rst button on the logic board but that did nothing. I also tried restarting the machine with command, option, p, and r down before the grey screen on startup and that did nothing.
Is this normal. is it just down to lots of HDDs/RAM or should i be worried?

Mac Pro most likely for "MP" shorthand.
Considering how the drives are placed, can't see that they block air, though they may not get direct ventilation.
FBDIMM memory needs to be kept cool and the top memory Riser and higher density DIMMs do tend to be as much as 10C higher (with 2GB DIMMs running the hotest).
I wonder if you got it with a system already installed? or did a full 'wipe' of the system drive and started fresh. There is a little program most people now use smcFanControl which can force the fans to run at a minimum rpm (though not the PSU fan, either software defect, or the logicboard won't allow forcing it if the sensor doesn't register a higher temp).
SFC would put a little menu item on the menu bar and to acces the program preferences. There would also be a log-in] in user accounts, and a startupitems in the top level Library/Startupitems usually.
Also, look on the Dock for items that can be controlled from there to "open at login" or disabled without having to open any control panels.
If it was me, and I bought a used system, other than direct from Apple Store (Specials, great deals on refurd equip.) I would start over with installing the system.

Has a noisy fan

What has caused my iMac to develop a noisy fan. It runs at full speed now, this has just started.

this sounds like its overheating. when it does this can you tell what graphics processor is in operation, you can do that by either using gfxCardStatus (a app that sits in the menu bar that tells you which gpu is in operation) or by going into the more info section of About This Mac and under display it should say which processor is in use at that time, either the AMD discrete GPU or the Intel Integrated one

G5 Noisy fan Fix

OK, I think I may have finally found the answer to the G5 Dual fan 'ramping' fan problem.
As many G5 users are aware, excessive fan noise has been an issue for years. Here is my fix, I can't say for sure it will work for you, but it did for me.
Firstly you need to do some basic stuff, clean the dust from your mac, fans, radiator and especially the PSU, It's a pig to get out but it's worth it. Check the LCS for leaks, remove the processors and apply new thermal paste. There are lots of other things you can try (Google 'G5 Noisy fans'), I tried them all but none of them worked for me.
I decided that the 'ramping' fans must be a heat issue, so with that I mind I attached a fan from a gaming PC to the front of my G5 (see pic), and connected it to the free molex connector on the hard disk to power it. On re-start the fans ramping stopped.
OK, I know what you're thinking, I don't want that ugly fan sitting on the front of my beautiful mac! neither do I. I intend to buy a super quiet 140mm fan and install it on the inside of the the front grill to keep my mac cool, and quiet!
I hope this may help other G5 users to have a 'fan' free day!

Great work, thanks for the post!

Noisy Fans

I have owned my dual G4 since 2002, and its still going strong!!. I want to replace the noisy fans, so I did abit a research and came across an apple web page about apple replacing the fans for $20. The problem I have is that the offer ran out in 2003 anybody got a idea of where I can pick up some fans cheap.

Hi there! Welcome to the forums!
I am glad to hear that your machine is going strong!!! Mine is also.. the MDD's just won't die without a fight given the intel macs of today. However, back to the topic.
What kind of power supply do you have in your MDD? First off, if its the 400 watt power supply, I would suggest trying to find the 360 watt power supplies. Those are the much quieter ones that Apple sent to customers back in 2003 to relieve the noisy ones - also the pabst fan was a replacement as well.
Once you do this.. get then a PCI slot fan to help in cooling the machine down. Next step is to mount(like I did) a 120MM power fan on top of the optical drive roof and have it blow the air out towards the back - this will aid in cooling down your system DRAMATICALLY. My pabst fan is close to silent now, though I can hear it sometimes, but I also have the power to control the fan's speed as well. Sometimes to get rid of dust and foreign particles which could hurt my system, I rev the fans for awhile in HURRICANE mode. I guarentee that your MDD will love the fans. Oh, one more thing.. Put a small 60MM fan underneath the front drive bay. + GET THE COPPER HEATSINK - this will further aid in cooling the system down.
Right now my dualcpu temp is: 90 degrees fahrenheit.

Extremely noisy fan and burning motherboard

Hi, I got HP dv5 2070us laptop a couple years ago and decided to dust out the fans and stuff. So I brought my laptop to the computer service office to clean it.
After the clean up, my fan got even louder than before! Roaring like crazy.
So I tried to figure out what was wrong with it. Downloaded some software like Speedfan and Aida64 to check out the temperatures of the CPU, motherboard and so on. Both mentioned programs shows that my motherboard is 87C (189F) ! and this temperature is fixed, doesn't change all day long, while the CPU temperatures are changing.
Maybe this is the reason of the noisy fan. What is more, computer doesn't shut down. The screen is black but fans are working even after 10mins. The only way for a completely shut it down is to press the power button.
Does anyone one how to solve this problem?

Hello Merc,
Try figuring out what's causing the noise.
Is it a vibration? Try a mechanic's stethoscope if you can find one; or just use a thin, long bladed screwdriver to amplify the noise. Cleaning the fan blades of accumulated crud will improve their balance. Occasionally, sheet metal or a loose screw will pick up the vibration and amplify it.
Is it a bearing or bush that's starting to wear? Maybe it's new fan time - nothing is forever!
Is it the rush of air? They make quieter fans, although the quiet ones don't always cool as well. (I have a dual 800MHz Quicksilver that was fitted with a quiet fan, and you could have grilled bacon on the heatsink - I wound up with a high-powered fan that I can hear in the next room.... but a cool Mac!)
Try measuring your fan (in mm) and searching for fans; I don't remember my exact parametres, but I turned up quite a few. Compare using RPMs, dBs, and CFM as guides. Come back and make us all experts!
HTH ..... Jon

Why Hp does not find any solution for Noisy Fan systems ?

I got DV6t core i5 6gb ram + 1gb Ati Radeon Graphic Card (6490m) + bluetooth + Bluray
I have to return it because of that noisy fan ; i was a new member of Hp family and i never investigate about that product for Laptop. After it got that gorgeous Laptop , i got this fan issue ; and i research that fan is working normal/anormal ; what i find out is Hp has a Noisy Fan Issue on all of the Video clips , Forum Websites even its own website ; I realy didnt know till i got it. If that is a common issue , Why that big brand HP doesnt solve that problem since many years ? I sincerely doesnt want to return this item because of fan ; because there is no comparative product in others company has .... (Bluetooth + Bluray + Finger print + 1gb (Integrated Graphic) and $749 ; i can not find any brand or product which includes that options in this price ..... So UNFORTUNATELY i am returning that Beautiful Laptop Because of ridiculous fan noise ; is that really hard to install a fan which is really silence ??? I have a Toshiba brand laptop , even the fan is working hard there is no bothering noise at all (Even its 4 years old) . I was thinking that Hp product has high performance equipment thats why this fan works hard or noisy because it could be stronger than my Toshiba which has core 2 duo technology 256 mb graphic card ; But i was wrong because of this video clip ; http://www.youtube.com/watch?v=-yLEXZGRGPY

I got DV6t core i5 6gb ram + 1gb Ati Radeon Graphic Card (6490m) + bluetooth + Bluray
I have to return it because of that noisy fan ; i was a new member of Hp family and i never investigate about that product for Laptop. After it got that gorgeous Laptop , i got this fan issue ; and i research that fan is working normal/anormal ; what i find out is Hp has a Noisy Fan Issue on all of the Video clips , Forum Websites even its own website ; I realy didnt know till i got it. If that is a common issue , Why that big brand HP doesnt solve that problem since many years ? I sincerely doesnt want to return this item because of fan ; because there is no comparative product in others company has .... (Bluetooth + Bluray + Finger print + 1gb (Integrated Graphic) and $749 ; i can not find any brand or product which includes that options in this price ..... So UNFORTUNATELY i am returning that Beautiful Laptop Because of ridiculous fan noise ; is that really hard to install a fan which is really silence ??? I have a Toshiba brand laptop , even the fan is working hard there is no bothering noise at all (Even its 4 years old) . I was thinking that Hp product has high performance equipment thats why this fan works hard or noisy because it could be stronger than my Toshiba which has core 2 duo technology 256 mb graphic card ; But i was wrong because of this video clip ; http://www.youtube.com/watch?v=-yLEXZGRGPY

Mac Pro (2014) fan

Mac Pro (2014) fan runs constantly

That is correct. Very astute observation.
¿Do you have any problems with your Mac that Readers could help you with?

HT1349 When I start my I Mac desktop the fan keeps running loudly. Can't get it to turn off.

When I start my I Mac desktop the fan keeps running loudly. How do I get it to stop?

Hello there, Jacquefromaz.
The following Knowledge Base article reviews the steps to perform a reset of the System Management Controller (SMC):
Intel-based Macs: Resetting the System Management Controller (SMC)
http://support.apple.com/kb/ht3964
Thanks for reaching out to Apple Support Communities.
Cheers,
Pedro.

Trouble running hardware test on 07 iMac with noisy fan

Hello
I have an 07 iMac with a noisy fan- I've tried vacuuming out dust from the back but want to avoid taking it apart if possible...
I read online I should run the hardware test, but since I am running Mavericks the Apple support advice is to run the original OS X install disc and restart (holding down D or Option+D)...
Long story short I got a replacement disc from Apple (I'd lost the original) but the iMac ejects it when I restart following the process above... could it be my bluetooth keyboard? Hopefully not since I no longer have the original hardwired one... or does anyone have any other ideas for either how to get to the hardware test... or fix the fan (without a third party app just stopping it)
Thanks!

Try holding down the Option key to get the one time boot manager screen then select the AHT. Not sure as Apple moved it around on different install discs but it might be on the Applications discs and not the OS X discs.

Noisy fan (or fan-like) sound coming from machine. Thoughts?

My macbook pro is from 2008 to start. I had the computer completely refurbished back in August 2011, though.
However, in the last two days, it has twice produced this impossible-to-miss noisy whirring/rattling sounds that sounds a lot like a very noisy fan. The first time, it last for about 5 seconds just as the computer was starting up after I'd left it closed and off all night (leaning against the wall). The second time, however, the computer had already been on for several hours, always upright, and just for some random reason started making the same noise. This time it lasted for a good 15-20 seconds.
Any thoughts on what could be causing this sudden noisiness? Whatever it is doesn't appear so far to be affecting the actual functions of the computer itself.
Thanks!

HI,
Probably a good idea to run the Apple Hardware Test just in case and make sure you have all your important files backed up to an external source.
Carolyn

Portg Z30-B-117 noisy fan

Hi,
I have a problem with my new notebook Portg Z30-B-117,
It has realy noisy fan, I was forced to use baterry saving mode, without that I can not work on this machine.
The fan speed is absurdly designed.
It has much more speed even when it does not heat up.
Please make a new bios with clever fan speed, then it will be the best notebook on the market!
Thanks in advance.

Hi, I bought Portg Z30-B-119 a few days ago and I agree this would*be the best laptop/ultrabook on the market, if not for two annoying problems that can easily be fixed by Toshiba.
1/
The fan indeed turns on and off very often, and really unnecessarily. It is not related to running any highly demanding process. It is enough to watch a video clip on youtube for 2 minutes and the fan turns on for few seconds, and then switches off because the laptop cools down enough. Then after another minute the temperature rises again so the fan is on again, and so on, back and fourth. This is quite annoying. This happens also when you just read something, just less often. And I know why this happens. Here is the explanation.
This is simply because of a very bad choice of Toshiba.* I used a tool that monitors the temperature of the cpu core (under Linux) and I saw that the fan is turned on already at 49 degrees Celsius (the core temperature, not the laptop case! The laptop is really cool outside when the cpu has 49 degrees inside!)*
How stupid is that! This laptop has i5-5200U installed so the maximum cpu core temperature is 100 degrees, so why not turning it on at 65 or 70?* On my Dell laptop, the fan is switched on at 65 degrees even though it is a lot less noisy than on Toshiba.
I use "balanced" mode for cooling, so the fan is less noisy than in "high performance" mode but it is still much more audible than on my Dell laptop.
The "power saving" mode is useless, because when the laptop reaches 48 deg the cpu frequency goes down to 400 MHz permanently (yes, because it will never cool off without the fan) and the laptop is useless at 400 MHz.
2/
The battery charging. The battery lifetime will be very bad on Tosbiba Z30. This is because the laptop charges the battery every time you plug in the power supply even if you used your laptop on battery for two minutes and it still shows 100%. Moreover this cannot be switch it off. I measured it simply by monitoring the current when switching the power cord with the laptop switched off so this is a fact not just a hypothesis.
On my old Dell laptop, the battery will never start charging until it goes below 90%. On my friend's Lenovo there is even an option in the Bios so he can decide to charge the battery only when it is below 70%.
It is a well-known fact, that the battery life is much shorter if you keep charging it when it is nearly full.
On my Dell laptop, I can even disable charging the battery completely using Fn+F2. So I can decide myself when to switch in on.
I do not expect Toshiba to have such a sophisticated tool, but at least they could disable charging the battery until it is discharged for example 80%.
Both problems can be easily fixed. The question is, do they care about their customers enough to do it? And how do you request such feature? Do the read the forum?

Mac 8500 Noisy Fan

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