Fan buzzing noise

Hello, my 13 inch late 2011 (Lion 10.7.5) MBP has started to make a buzzing noise when the fan is running. Its sort of a low E and a constant buzz, no static, so I dont think it has to be cleaned. When the fan gets louder and faster it drowns out the buzzing, so that also makes me worried.
Oh, and if needed, I downloaded a Fan Control pref pane in January.
I also just deleted some junk and cleaned up my computer.
Thanks,
Narmo

                iStat Results
CPU               24%-45% User
                      5%-10% System
FAN               5630rpm Exaust
BATTERY      Health 84%
MEMORY      1gb Wired 2.18gb Active
TEMPS          HD- 35deg
                     CPU- 91deg
                     Enc Base 1, 2, 3: 30deg
                     Heatsink B- 51deg
                     Mem Bank A1- 47deg
                     Mem Module A1- 54deg
BROWSER    Opera
VERSION      10.7.5
MODEL         Pro, Late 2011, 13"

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Fan buzzing noise at 6000 rpm.. Sound worst when tilted on any axis...

My macbook been overheated since the Snow Leopard upgrade but what really anoy me the most is that the fan make a buzzing sound over 6000 rpm and when I pick up the MBA is tilt in any axis it make a noise like a fly is right next to your ear and it also feel like the fan is loose or somthing. Is that fan sound normal for those who got a macbook pro. Try tilting the laptop a little and does it make a weird sound? I keep thinking is a defective fan or something is loose that relate to the fan.
Does this happen with your guys macbook air? Is this normale of should I bring it in and see if I can get my fan replace.
I can barely hear it at 2000 rpm but at 6000 is really anoying to work with the computer for me...

I would get it check out. It might be the blase hitting or a motor bearing.
Dave M.
MacOSG Founder/Ambassador  An Apple User Group  iTunes: MacOSG Podcast
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Apple Hardware Test (AHT), buzzing noise, fan blows loud, & AHT crashes

Hi there,
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When I run an Apple Hardware Test, The AHT disc crashes each time at the 5 minute and :12 second mark while "In Progress" on the "Mass Storage" test, it freezes and the fan gets loud. I do a hard restart to get up and running ok each time afterwards.
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Some G5s had a firmware update that caused problems with the version of Apple Hardware Test that shipped with the G5. The Latest G5 Apple Hardware Test is 2.2.5
Call Apple and see if you can get it.
Another hardware test is TechTool Pro
<http://www.micromat.com/index.php?option=com_content&task=view&id=31&Itemid=48>
Meanwhile, try testing with some of the RAM removed. Try different combinations of RAM modules and slots. Always use them in pairs.

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Hey all,
This is my first post on the forum! Thanks so much for providing such a welcoming atmosphere.
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I went in and reapplied the electrical tape to the ZIF and power board connector and it fixed the power and fan indicators, but the popping remains. In light of that, three questions.
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It's definitely not the speakers! I was using Skype and the buzzing got worse when I starting using the onboard webcam - it's definitely the power board connector. Last night I did some poking around and got the buzzing noise reduced, but I just did it by scotch taping this
over the connector. With that in place the sound works fine, the indicators are working, and the only sign that there's any problem at all is a crackle on start-up that goes away after a minute. Assuming it's stable and it stays functional, should I just be happy with that? I'm worried that taking it to a repair place would cost me a bunch of money I don't have for a fix that's basically no better than what I already did. I'm mostly just worried that the problem will come back now that I've got it working - those connectors seem really precarious.

The strap of my bag broke when my laptop was in it, now it is making a buzzing noise all the time and sometimes get a bit warm. I have warranty with protection plan, how do I fix it?

The strap of my bag broke when my laptop was in it, now it is making a buzzing noise all the time when I am using it. I have warranty with protection plan, how do I fix it?

Take it in and have it assessed. They do not have to know about the bag incident unless the explicitly ask for the specific details (like when you are being questioned by a TSA screener, LEO, etc.). As far as you know, the noise started up and it is getting warm. With luck it is just an unbalanced fan that needs replacement.

Fan-like noise originating from under keyboard

Dear all,
I've begun having a recent problem with my MBP (15", purchased Summer 2008) that has been quite bothersome. I am not particularly computer savvy, but I will try to be as descriptive as possible:
1) It seems that any time the computer heats up a little bit (for example, if I am running a graphically intensive game or even watching a HD full-screen youtube video) it starts to make an odd buzzing noise.
2) The noise is not from the speakers, it sounds more mechanical and originates from exactly underneath the [ ] (square bracket open and close) keys on my keyboard. In fact, if I press down on those keys it muffles the sound, suggesting a possible fan origin.
3) It doesn't sound the way a computer usually sounds when it is working hard - this is quite different - and it does not go away until I either turn off the computer or close the lid (sleep). And it may very well start up again if I turn it back on without giving it a significant rest.
4) The functionality of the computer itself does not seem to be diminished in any way. I first had this happen a little over a month ago and although at first I was afraid it might die on me, it seems to be working quite normally. In theory nothing is preventing me from doing my work in spite of the sound, but I feel conscious of it and unless I've got my headphones turned up, it can be quite disturbing.
Under other circumstances, I would've taken this in to a Mac store ASAP, but I am currently living abroad and will not be returning to the States for another month or so.
I was wondering if anyone had any thoughts on what this might be and what, if anything, I can do to fix it myself.
Thank you,
krkode
Message was edited by: krkode87
Message was edited by: krkode87
Message was edited by: krkode87
Message was edited by: krkode87

Hi CMCSK,
I have 4 GB of RAM and about 90 GB of HD space left.
Hi Rod,
Your idea that the fan might be dirty sounds very plausible. The ifixit instructions look do-able but I might have a bit of trouble finding the right kind of equipment to perform that disassembly. I suppose I will ask my colleagues and figure something out.
In the meantime, do you know of any other way I might be able to temp-fix this problem? At least until I am back in the states. Such as maybe revving down the right fan and allowing the left to compensate? Or another approach to cleaning the fan? I guess I'm just thinking aloud at this point.
Any thoughts are appreciated!
Thank you,
krkode
P.S. I have more than a year left on my Apple warranty, by the way. I'm assuming trying to do something myself with respect to opening up the machine would void that?
Message was edited by: krkode87

Fan like noise - Macbook Pro Retina 13 inch - late 2013 model

If I open Frontline Commando (game app) my brandnew Mackbook pro make fan like noise. (annoying and scary) Could anyone advice please?
my sys configuration:
Model - Macbook Pro Retina 13 inch - late 2013 model
RAM - 8 GB
Processor - 2.4 GHz intel core i5
OS - OS X 10.9.1

Normal during gaming use, fan noise.
A: you notice it more in a quiet room (the typical case) which is normal, all is AOK
B: fuzz and dust has caked onto the blades causing the fan hub to get off balance and make a buzzing sound.
C: fan rotor is going bad and making a whirring or buzz noise (rare).
D: Fan is spinning up due to excess heat from gaming, heavy graphics gaming (typical, all is OK)
A and D are normal
B and C are not.

Mac Performa 405 buzzing noise

Whenever I turn on my Mac Performa 405 after a while it starts to make a buzzing noise. I am almost positive that this noise is coming from the add-on Motorola 68882 FPU installed into the socket on my Asante MCiLC LC PDS network card. What can I do about this noise? It's driving me crazy & the Mac has also frozen once before briefly (it was running for hours on end though). Somehow a couple of minutes later Mac OS 7.5.5 managed to unfreeze itself. When I upgrade to Mac OS 7.6.1 will my FPU be better supported? The Mac has 12 MB of RAM though it only sees 10 MB too. Virtual Memory is also turned on since I'm trying to get Cyberdog 2.0 to run. Cyberdog 2.0 also freezes the Mac whenever I try to go to Apple's Support site too.

Craigwd_2000
It is characteristic of the Colour Classic, CC II, Performa 250, LC II, Performas 40x, and others that I wot not of from direct experience, that the lowest 2MB of 12MB installed are not addressed by the MMU. Pointless, but true. Add 2 x 2MB to the base 4MB and 8MB wil be used. Add 2 x 4MB and only the top 10MB will be used. If you feel limited by this, replace the LC II logic board with a Q 605 board and add a 32MB (or 128MB) 72-pin SIMM. My Elsie sings with the latter combination, and can run OS 8.1 with aplomb. With more RAM you wil be able to abandon Cyberdog (unless you wish to savour the agonies), and accommodate other applications with greater memory demands.
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You need only to elevate the rear of the case, as has been suggested, to increase ventilation enough. Given that, and the inner cleanliness that so-and-so's tonic water can produce ... you can find the source of the noise by attacking the suspects systematically. The speaker is awkwardly situated for direct listening, but you can do it with the case top off. Make sure of the security of the cables routed around the speaker, in case one or other is loose and being struck by the fan.
Apple IIe; 68K: 11DT + 4PB; PPC: 5DT + 3PB; G3: 6DT System 6.0.8 to OS 10.4.x

Fan Buzz

I have an early 2008 MacBook Pro and over the last few months I have started hearing a buzzing noise. It sounds like a bee or a mosquito buzzing and is coming from behind the upper right part of the keyboard. I'm quite sure it is the fan because it gets a bit louder when the fan speed increases. The speed of both fans seem to be correct though as they hover consistently at 2000 rpm and increase appropriately if the machine gets hot.
If there is any background noise going on in the house I can't hear it, but when I'm working quietly (most of the time) I can hear it buzzing away. If I put my ear up to the machine on the left side all I hear is a gentle sound of air movement, so the right fan is definitely sounding different from the left.
Even though it really isn't all that loud, it is quite annoying, and I'm certain it wasn't there when I first bought the machine.
I've heard some say that their MBPs are so quite they didn't even realize that the fans idle at 2000 rpm all the time. So here's the question. Is ANY amount of fan buzzing abnormal, and therefore something that should be fixed under warranty?

Is ANY amount of fan buzzing abnormal, and therefore something that should be fixed under warranty?
Yes and yes. Visit an Apple Store (if convenient, and if so, make an appointment first) or call AppleCare.

Buzzing Noise from (IMAC 27-INCH,MID 2010)

I have noticed this buzzing noise (like crackling electricity of sorts) comign from the left side of the machine out of the cooling vent. I bought my IMAC in 2010 and have not had any problems with it until now. I noticed the "noise" a couple of months back and it would show up here and there every once in a while, it was not annoying, so I let it be. Until this last time, when the noise was loud and annoying, I could not just forget about it. I am under warranty and called into Apple to see what can be done for this problem. I was told to take it into my nearest Apple store to get it looked at, since over the phone they could not do anything about it.
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Will update if problem is resolved!
Has anyone had this type of problem?? Any advice would be apprciated!! Thank you

This might seem a strange answer, but it has fixed this fault on my 27" two year old iMac (at least for a few days now, will be monitoring).
I had this very fault suddenly develop last week.   It was consistent, the noise increased with screen brightness, but was also present with the screen asleep.
I looked at every forum on the subject, became almost convinced my fans weren't controlling properly as well.
I decided it was the switched mode power supply, discussed repair options with my local Apple Store.
Checked the household mains voltage - I'm in the UK, it was slightly low at 236v AC, but thats acceptable.
Then ....
We have a garden full of water features and LED lighting.
I just decided to check all our power junction boxes that supply power to various pumps and lighting.
I found one of the boxes full of water, with the Live, Neutral and Earth, and the 12v DC cables all under water and shorted together.   The terminals were all corroded and burnt.
Yet, I had no faults present in the garden, everything was running normally.   And the RCD breaker had not tripped.
I repaired the box, fitted new terminals and rewired the box.
And since I did that, my Mac has cured itself.
I've had it running for hours to get hot, no noise, gone completely.
And the mains voltage now measures 242v AC (should be a nominal 240).
The RCD did not trip because, with all the cables shorted in water, there would no out of balance condition to initiate a trip.
So, I can only assume that arcing or the short was causing some harmonics on our mains supply that was been picked up by the coils in the Mac power supply.
The 12v DC supply in the junction box was also supplied by a switched mode supply.   I dont understand why something didnt blow in the garden, but it didnt.
I'm monitoring the Mac as the solution just seems unrelated.
Oh, and I noticed our Intruder Alarm panel was humming loudly and now it isn't.
So, I would suggest anyone with this issue takes note of any unusual humming or buzzing in any other electrical item within the house, or outside.   It may indicate you have an issue elsewhere.
Even any loose mains plugs in equiment could be causing a slight arcing on the contacts, causing noise on the mains that may be getting picked up.
Coming from an interest in high-end analogue Hi-Fi, amplifiers always performed better with a dedicated, clean, mains supply, usually from a 40 amp rated cable fed direct from your electricity meter to supply your Hi-Fi.
The amplifiers would exhibit less noise and a cleaner sound with more detail.   And the transformers in the power supply were a lot quieter too.
And what do we have today - ethernet tranducers plugged into household sockets, superimposing high frequency signals onto the household wiring.
They would cause havoc with top-end amplifiers, I'm sure.
I hope this is the solution, saves me an expensive repair.
I've never had any problems with the six Macs I've owned in the last 12 years.

Odd buzzing noise when on BOTH AC & Battery

My PowerBook has a strange "buzz" that sounds like white noise (or crickets, like my old G5 used to) when it is plugged into the adapter AND with the battery in. When the notebook is on just battery or just AC power, there is no noise.
What is my problem?

Hi, I had the same problem, at least symptoms. Changing energy usage to low worked fine, but I use graphic intensive software so I need the high performance output. I posted the below information on a separate article as well, but I wanted to share it in case anyone has the same problem and wants a possible better fix.
--- previously posted---
I recently had a loud screeching buzzing noise, not the very faint hard drive or fan sound, but a loud annoying sound. After searching hours online, I found an answer for the problem. (in my case at least)
If you have any speakers plugged into the same energy source (i.e. powerstrip), that may be the problem. I unplugged a set of Sony speakers I had running along the same chain of AC powerstrip outlets, and the noise was gone. The article I found was here: (look for the post by "ST" about midway down this page:
http://bose.infopop.cc/groupee/forums/a/tpc/f/6366055944/m/8671042332/r/38810225 32
(Hope it might help!)

MacBook Pro - Core 2 Fan Buzz.

Hey there.
Just wanted to know if any users of Core 2 MacBooks had nay trouble with the infamous fan buzz i hear so much about. If there is, please post here!

Had a fan noise called Apple care USA they gave me a location for Apple repair station in Kingston Jamaica. got there some kid put an Apple CD in my machines says he did nothing but after that my machine is now quiet.
Go figure-I still hold that the CD did something.

Random buzzing noise

I keep on hearing this buzzing noise from the left side of my ibook. It is not the fan, nor is it the clicking sound that comes up once in a while from the hard drive. I guess it only happens when I run programs such as Virex, ichat, safari, etc. Is that norm.?

Nub,
In your case, it sounds like something is going on with the power supply. Whether it is good or bad, hard to say. Run the hardware test that came with your machine's restore disks to see if it is able to detect anything wrong. Even if it isn't I'd contact AppleCare to check it out.

Left Fan buzzing and ticking!!!!

hello people,
i've had my new macbook pro late 2008 for the past 2 months, and just out of nowhere i started hearing a left fan buzzing and ticking. the sound comes and goes every 5 minutes and stays for a long time, and it also starts as soon as i turn my mac on, then goes off then back on again and so forth and so on. this is really annoying. i am wondering is this normal?? would this get worse and affect my mac in any way?? and most important is there any way i can fix this or get rid of this left fan issue??
thank you in advance for all.

This happened to me too - MBP was perfectly silent for about a month, then the left-hand fan started buzzing, not too loudly, but enough to be audible. I thought it might just "wear itself in", but the noise increased instead of decreasing over time.
I took it in to a repair centre last week, they confirmed the fan was faulty and have ordered a new one, will arrive this week. Hopefully the new one will solve the problem.
Just for information: the new design makes the fans very accessible and easy to replace, so this is not a difficult job, nor is it likely that a technician might damage the computer in another way in order to get at the fans, as might have been the case in other models with more complicated internals.
Also, if you want to risk voiding your warranty, ifixit.com sells replacement parts you can install yourself, including the fans. But I wouldn't suggest this while the computer still has any warranty left - get Apple to repair things for you.

Intermittent Buzzing Noise

I'm getting a loud, buzzing noise from my G4 DP500 Powermac. The noise sounds like a bad fan bearing and is accompanied by moderate vibration which feels like it's coming from the area of the power supply at the top of the machine. This only occurs when I am using Pro Tools, working on a large session with a lot of plugins enabled, and only after the machine has been in use for a long period. The noise and vibration start very suddenly, and disappear when I restart the machine. Is there a fan somewhere near the top of the machine that would only activate after a long period of intensive use?

It really feels like the vibration
and buzz are coming for the power supply unit. Is
that a replaceable or serviceable part?
I've never run across a power supply that coudn't be replaced Prices will vary depending on what machine you have.
Another thought...
Apple went though a time where they used no screws during assembly - everything was snap-together.
If your machine uses screws, might also want to check and make sure they are all tight.
If, when you touch the power supply itself, the noise stops, mght want to try using some sort of wedge/filler where the power supply contacts the case proper. (I used a folded piece of paper to stop one vibration related noise)

Fan buzzing noise

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