My fan(Left only) is running at high speed all the time since last update. Any ideas? (Mac OSX version 10.7.5 on 27" mid 2011)

My left side fan is running at full speed all the time. I have downloaded free fan speed control app but does not help. Any advise

Fan Control Apps/Utilities generally can only raise the speed of the fans and not lower them.
Disable, turn off or uninstall whatever Fan Control that you installed and reset the SMC.
see > Intel-based Macs: Resetting the System Management Controller (SMC)
1. Shut down the computer.
2. Unplug the computer's power cord.
3. Wait fifteen seconds.
4. Attach the computer's power cord.
5. Wait five seconds, then press the power button to turn on the computer.
Then if the iMac's fan is still running fast, you probably have a loose sensor cable or bad thermal sensor and the iMac needs to be taken into service
see > Apple - Support - iMac - Service FAQ

Similar Messages

Mac mini Intel Core Duo fan very loud and runs at high speed all the time.

I purchased an "Open box" Mac mini Intel Core Duo, 1.66Ghz, 2G ram, 80G HD and SD a few days ago from Fry's.
It runs beautifully except the fan is very loud compared to any Mac my family has ever had. It is so loud that we were thinking of putting it under the desk.
The fan runs constantly, and I mean all the time, at a high speed. You can really feel the air coming out the exhaust vents. The case is always cool to the touch as is the exhaust air.
My aunt bought a similar Mac mini (But only 512Mb ram) the same day. Her's is very quiet. The case feels just slightly warm, not unlike other Mac mini's I've seen.
Should my Mac mini's fan be running this way?
Thanks,
llulua
BTW: The "open box" was sealed with a Fry's label and it said that this had a new warranty. Yet, checking the serial number, it said that it had about 260 days left. I guess Fry's is backing it?
Also, someone told me that perhaps the main wire from the fan to the logic board is disconnected.
eMac 1Ghz, iBook 500 dual usb, Mac mini 1.66Ghz Intel Core Duo 2g ram Mac OS X (10.4.8)
eMac 1Ghz, iBook 500 dual usb, Mac mini 1.66Ghz Intel Core Duo 2g ram Mac OS X (10.4.8)

Since you have 2 gigs of memory, my thoughts are that when the party (Fry's or the origianl purchaser) upgraded the memory, they neglected to reattach the wire at the front of the Mini under the IR receptor at the right front corner that regulates the fan speed. This wire must be unattached in order to upgrade the memory, and is probably why the original person brought it back, because of the fan noise resulting from failing to reattach the wire. If that wire is left unattached, the fan runs continually at high speed to protect the CPU and system in general. If you do not want to use a putty knife to open the Mini, take it back to Fry's and ask someone who is Mac savvy to open it and reattach the small plastic receptacle at the end of the wire into its socket at the right front of the machine. When I go to Fry's, I am always concerned because the employees allow people to pry keys off of the Apple notebooks, so don't expect that their employees to know or care about anything Mac.
Al PB 12" 1.5 Mac OS X (10.4.5)

Fans running at high speed all the time

Hi,
I still haven't found a fix for full throttle fans at start up and session on my imac 11,3 mid-2010, 27", 2.8Ghz, i5 since Mavricks installed.
CPU temp 72 degrees F, CPU fan 3992 rpm, optical drive fan 3589 rpm, CPU usage <2%. Installed boot rom 1M112.0057.B01 is the latest version available.
Resetting PRAM & SMC don't work. As with others with mid-2010, 27" macs running 10.9, AHT does not work with the D key or the Option/D keys, so no hardware test.
Worked fine with 10.8.
If someone has a working solution, please let me know. Otherwise I will have to wait for Apple to release a fix. The fan noise is extremel annoying.
Thanks

I hate to say this but 72º F for the CPU is not hot. Did you have a hard drive replaced recently?
Open Activity Monitor in the Utilities folder. Select All Processes from the Processes dropdown menu. Click twice on the CPU% column header to display in descending order. If you find a process using a large amount of CPU time (>=70,) then select the process and click on the Quit icon in the toolbar. Click on the Force Quit button to kill the process. See if that helps. Be sure to note the name of the runaway process so you can track down the cause of the problem.

Fan runs at full speed all the time

The fan on my brand new iMac 17" runs at full speed all the time, creating an unbearable amount of noise. The activity monitor shows 99% spare time, i.e. nothing much is running.
I updated all software, checked the firmware version (it was the latest already) and performed an SMC reset. I also unplugged it for several hours, as some people have suggested.
I downloaded smcFanControl and it says that the ODD fan is running at 5200 rpm all the time. The CPU and HDD fans seem to run at normal speeds. smcFanControl also reports a cool 39 deg.
Does anyone have any idea of what to try to fix this problem?

I don't have a solution but thought I'd add a computer that showed the same behaivor.
A 20" iMac I was configuring for my company did the same thing, but just once so far. I used it briefly just out of the box and didn't have any problems. It's a stock install of OS X 10.4.8, no other software installed. Turned it on several days later and the fans ran during the 2 hours I used it to run Safari via Airport. I turned if off after it started to smell like hot electrical components. Activity monitor looks completely normal. After shutting it off for two hours, unplugging and re-plugging AC and keyboard, it came back on with no fans. I did not do the SMC reset or any updates between the power cycle.
ps. Repairing permissions is Voodoo
http://daringfireball.net/2006/04/repairpermissionsvoodoo

IMac Fans running at maximum speed all the time

Hi Appleians!
I have an iMac 20inch with 8GB RAM and its an i3 intel processor. I purchased it from a friend of mine who had replaced the original hard drive with another that amounts to a terabyte. Now the fans are running at full speed all the time making it way too noisy to work with. It however works smoothly with no problems except the fans are irritating, it does not heat up though. Anyone with a solution? I tried resseting the SMC it didnt work.
`Oh and the computer is running on Mavericks.
Please help!

See the suggestions by mende1 here > Mac fan runs all the time

15 " MBP C2D fans running at full speed all the time

hi
just purchased new MBP C2D 15 inch, the fans are running all the time at full speed (or at least sound noisy).
i know there were several updates on earlier machines but none for this one that i can see.
SMC Version: 1.12f5.
any idea's please.
thanks

A very reasonable thought although it's clearly not DOA. Nor do we know whether it was bought as a CTO or not. The requirements for classing a system DOA are very clear and this system, while possibly not operating correctly, certainly is not a DOA.
I would however make every effort to determine the cause of the problem. Potentially the issue can be caused through software and no fault of Apple. Being able to quantify an issue does go a long way to resolving it.

Fan on all the time since Battery Update 1.2 installed

my fan stays on all the time now. this only started happening recently -- about the same time as i installed the Battery Update 1.2. It might be just coincidence.
is any one elses macbook pro doing the same thing?

Good news re it stopping
For Modesty0007,
If the problem doesn't occur on a new account it most likely means you have a process running on your other account that uses up a lot of CPU, making your computer temperature go up and the fan spin harder in turn.
Go back to your usual account and have a look in Activity Monitor to see if you have a process running that fits the description.

X800 fan runs at full speed all the time. Help!

Hi folks,
Apologies if this has been answered before - I tried to use the search but to no avail!
Anyway, I recently purchased an X800 and installed in my G5 1.8DP (OS X 10.4.9) with the intention of having something to drive my shiney new 30" Cinema display. All booted fine and, in glorious wide-o-vision, I spent the next 30 mins playing with all of this extra screen real-estate. At that point, I started to notice that things were not as quiet as I'd initially anticipated. In fact, the amount of fan noise was so high that I'm not going to be able to use the new card as the machine is part of a project recording studio installation. Doh! So, a quick trawl of the ATI web site lead me to the ROM updates claiming to address fan speed control. Update to the most recent version of the ROM and no change. Similarly, I've installed the most recent version of teh ATI control panel. Odd as other people seem to be saying that they're not experiencing the same problem. And strangely, the GFX card fan runs at a low "normal" speed in Safe Boot mode whilst installing the ROM updates.
Any ideas what to do next? It would be great to get this working but I'm kinda stuck. Otherwise, it's to ebay with the X800 and time to find a 9600 which has passive cooling.
Any help would be gratefully received.
Cheers,
Mike

Hiya,
Thanks for your thoughts. Yup, I'm starting to think this is just one of those things and I need to swap for something with passive cooling. The mac fans seem to be fine although there have been moments when they decide to have a mad minute or two. I think the card next to the graphics card (digidesign core card) is not going to help. Was previously pretty acceptable at normal monitoring levels with the 5200 Nvidia but now you can hear the machine over conversation levels which is tedious. Was thinking about moving the machine to another room or get a quiet rack to house everything but it might be easier to use the cash for a Magma chassic and use my Powerbook. Or stop using Protools and go for Logic? lol! .....
So, anyone want to swap an X800 for a 9600? Ebay, here we come ...
Cheers,
Mike

Blank Screen and Fan on High Speed all the time

We have a TouchSmart PC 300-1000z (Aw021AV#aba) Windows 7 Home 64bit.
This morning the screen was blank and the CPU fan was stuck on high. It will not throttle down at all. We have to press and hold the power button to get the machine to power down.
I can't see anything on the screen so I can trouble shoot it. I did remove the back panels and so forth to dust it with a can of compressed air.
Any thoughts on this?
Thanks.

Hello IDSwagman,
When you boot the computer is the screen completely black or do you see the boot logo screen show up and then the screen go black?
This HP troubleshooting article addresses the issue you are experiencing. The steps you take will depend on if the screen ever shows anything at all or it is always completely blank.
http://goo.gl/LAo04
If I have helped you in any way click the Kudos button to say Thanks.
The community works together, click Accept as Solution on the post that solves your issue for other members of the community to benefit from the solution.
- Friendship is magical.

I want my fan to run all the time on power adapter, any guru know how?

After buring out one hard drive, and getting tired of hauling a mini-fan and 1/2" foot spacers around with me between motels, I want a way to force the powerbook fan to run at full speed all-the-time when the powerbook is connected to a/the power adapter. Anybody out there know of a "patch" / "script" / "shell add-on" that will do this on 10.2.x?

Trust me, you don't want to do this. That's not how they are designed to run. If your machine is overheating, consider this article:
http://docs.info.apple.com/article.html?artnum=30612
And perhaps a notebook cooler, like this one by Antec. And when get back home, run the hardware test that came with your machine:
http://docs.info.apple.com/article.html?artnum=86178
If your machine is under AppleCare, I would take it in for service if any issues are detected.
Also note if your battery is under the battery exchange program:
http://support.apple.com/batteryprogram/

MacBook Pro's fans start running at high speed when the computer is asleep. Normal?

The other night, my MacBook Pro's fans started running at high speed when the computer was asleep. Loud enough to wake me up. And this just kept on going until I finally decided to turn the computer off. Is this normal? Is this anything to worry about?

This is not normal. See if a SMC reset solves the problem:
http://support.apple.com/kb/ht3964
Ciao.

Macmini running at 1.83GHz all the time...

My Mac mini CD 1.83 arrived yesterday. I am surprised that it runs on 1.83GHz all the time even I only open Adium and Safari (but doing nothing). Does it sound alright? cause the temperture stay on 55-63'c all the time, will it be too hot? Any feedback is great....Thanks in advance.

You raise some interesting points, to which I would like to respond - as much from curiosity as to your conclusions and observations as anything.
"smcFanControl" is a small app that will allow you to
set the minimum fan speed to a higher value than the
default 1500rpm. I have now set mine to 1750rpm and
the temps are now46/39C (core1 and core2). HD is
44C.
I can't entirely understand in what way users of this software feel the standard fan control based in MacOS is deficient - and that if it is in a specific system, why it would not be considered better to have that fault resolved rather than circumvented. That someone has written software to control the fan does not, in itself, suggest users would be wise to avail themselves of it.
I can not exclude the possibility that this may
decrease the life expectancy of the fan, but it
should definitely INCREASE the life of the
logicboard's components and harddrive.
'Should definitely' is a good disguise for lack of certainty! There is, for example, no indication that the design of the Mac mini's logic board would benefit in any way in common use from running cooler, and to take one of your later points regarding not wanting to cause vibration by use of the internal optical drive in order to avoid damage to the logic board, no reason to believe that the increased fan speed you have selected will not cause greater vibration impact over time anyway. That said, there is nothing to indicate that the logic board suffers from vibration damage anyway, but if it does as you suppose, then surely fan speed is just as much a potential culprit.
Someone else has reported that removing the top case
lowers the temps 12C,so it seems the Mini IS
suffering from it's diminutive size, not
unexpectedly..
It is self-evident that removing the casing would cause the system to run cooler, as would be expected in any conventional design where a box encloses a heat-generating source. The issue isn't whether it runs cooler that way, but whether the heat levels when running in more conventional 'assembled' mode are in any way damaging to the system.
There is always the possibility that your supposition is right, but if the history of laptops, for example, is anything to go by it would seem likely not. I have both Mac and PC laptops that have been in service for many years combined service and suffered no ill effects of temperature, vibration, even minor impacts and general handling abuse - things which the manufacturers (including Apple) have clearly designed the product to cope with. It is certainly true that both my iBook and TiBook run much hotter than my mini, that their optical drives create far more vibration and their cooling systems are far more challenged by cramped internal design, yet they both function flawlessly, despite continual heavy use. My experience is not, as far as I know, untypical. It leads me to believe that Apple have some competence in their design of products, and that they actually do know what they are doing.
Ultimately, given that the mini is heavily based on laptop technologies, it seems to me there is no reason to believe it will fare any worse in reliability and capacity to cope with heat and vibration than laptops do - and it certainly has more internal 'space' to allow air circulation.
However, removing the top case will expose it to
RFI/EMI, so the chance of it crashing due to nearby
radio transmissions will be somewhat higher..
Not really. The sides and base of the mini are metallic, though the clips that hold the sides to the base are plastic and there's no indication of a solid electrical contact which would help screen spurious RFI. The top panel is, however, a form of plastic, which has no RFI screening characteristics, so any stray radio frequency energy in the area is capable of leaking in there. Radio frequencies are not particularly directional (except when approaching microwave levels), and the worst common RFI generators are typically VDUs, which are normally above the mini anyway.
Much more of a problem than RFI getting INTO a mini is RFI getting OUT! The top panel is transparent to radio because both Bluetooth and Airport antennas are inside the unit under the top and they have to be able to 'see' out, and computers typically generate far more RFI than they are likely to receive in a normal home. Try putting a mini next to an end-fed wire antenna connected to a shortwave (HF) transceiver or receiver. The lack of screen on the wire allows a lot of stray RFI to get into the signal received! People generally don't notice RFI at that level anyway, and of course most modern domestic appliances, such as TVs etc, are designed to screen it out.
My personal choices are intended to make the mini
live as long as possible, and this includes not using
the internal optical drive AT ALL, since any
vibration from this will be transferred directly down
to the logicboard. This is not really my idea of
healthy design..
I can't disagree with the notion of using an external optical, though in my view not because of vibrational concerns, but simply performance and usability. I think all the indicators are that Apple's designers know far better than I do about what the system itself can cope with and how to design it to be robust enough to withstand time, but the optical drives used are frankly not that wonderful in terms of performance, and can be problematic to extract a stuck disk. An external allows the user to select a unit which specifically meets their need, and is more likely to allow easier retrieval of disks in the event of a failure.
Seems to me as if Apple's priorities were to make it
small, good looking and quiet, and they succeeded in
that. I wonder if life expectancy were ever part of
this equation..?
You imply it wasn't, but there is no evidence of that being so, and plenty of evidence it was. One has to accept that no modern product is designed to last an eternity, and the mini is certainly no exception, but as far as it is possible to tell from a model life that is still a little under 2 years, there's no indication that the mini will not last as well as any other system. certainly in my experience, one of mine has been running 24/7 since the end of January 2005, and it shows no indication of getting tired or suffering any problems - and I can tell you without any doubt that in that time it has suffered a far harder working life and higher consistent load than the average home system would get in twice that time or more.
A number of Apple's designs in the past have shown
that thermal management is not really their biggest
strength, so a little self-help here can go a long
way..
I can't help but wonder what you mean by this. I own three Macs which specifically are famed for high temperatures; an iBook, a TiBook and a G5 dual processor powermac. The laptops run hot, as laptops do, but are clearly designed to cope, and the G5 has incredibly efficient cooling which means that for the most part the fans barely do more than idle - indeed, the cooling of the G5 is really a masterpiece in its own right. Given that the switch to Intel results in lower overall heat generation than the PPC counterparts, it allows Apple to design systems of far greater power than was possible before without increasing heat generation beyond (or in many cases such as the Mac Pros, even as high) as those systems that went before.
For example, to get similar performance from a PPC mini that an Intel model is capable of producing, would have required a G5 (or indeed, dual G5s) which would have been impossible to accomplish in this sort of design. The Intel chips now being used allow substantially better performance without markedly increasing heat levels - indeed that was the argument used when justifying the switch. Intel minis do run hotter than the G4 models did, but at substantial gains in performance.
I'd say that makes for good thermal design - understanding the limitations of the physical space and ensuring the product is engineered with those factors in mind.
Overall, I think you raise some great issues for discussion, and no small number of common concerns. But, for example, the simple issue of heat levels, often argued as critical to component reliability because of heat stressing, ignores the fact that component and board tolerances and manufacturing standards have improved radically, and that in reality it's not, within operationally tolerable margins the temperature at which the system runs that is the actual problem, but the width of variation of temperatures as the system is in use. Variations around the steady-state operating temperature are what causes the worst effects of heat stressing, most likely to cause component failure, not the steady-state temperature level itself.
Anyway, I didn't set out with the intention of trying to demolish your arguments, and I hope it doesn't come across as such - indeed, quite the contrary, I wanted to explore the thoughts and issues because they are interesting and of no small value to the community of owners overall.

HT201263 my ipad give me the apple sign without running up it appears all the time in the screen , i tries to reset my ipad , but still in this problem , can you please help me?

my ipad give me the apple sign without running up it appears all the time in the screen , i tries to reset my ipad , but still in this problem , can you please help me?

You may want to look at this about using recovery mode to restore your iPad.
http://support.apple.com/kb/ht4097

When running lion 32bit my wireless works great, when I run lion in 64 bit the wireless works awful. Any ideas?

When running lion 32bit my wireless works great, when I run lion in 64 bit the wireless works awful. Any ideas?

I solved my own problem. Found spotlight in Lion 7 doesn't seem to like third party external drives and gets hung up and unmounts the drives. Had to go into the spotlight preferences and choose all my external drives to not be searched by spotlight.
Temporary fix but would love to see apple address this issue in the next version of Lion.

Should I run Firefox with Rosetta all the time?

I was just wondering if it's a good idea to run Firefox with Rosetta all the time or will the browser run faster if I turn it off when it's not needed?
I need to turn it on enough to make me think it'll be easier for me if I leave it on all the time.

It will run faster and use less memory if you let it run natively- whether the loss in speed is made by the convenience of not having to switch it (for whatever reason you're switching) is a personal calculation.

My fan(Left only) is running at high speed all the time since last update. Any ideas? (Mac OSX version 10.7.5 on 27" mid 2011)

Similar Messages

Maybe you are looking for