IMAC G5 Fans Cycle approximately every 5 to 10 minutes to higher speed

I have a 4 year old iMAC G5 which just started ( about 2 weeks ago) cycling the fan speed to high about every 5 to 10 minutes. I have checked using iStat the temps and the fan speeds, and the temps seem no different than they were before. I have checked to make sure there is no apps hogging CPU. I do notice that the fan cycling seems to happen with Safari 4 open. I have also reset the power control by unplugging all cables and power up the machine while holding in the on off switch and plugging in power cable. The machine has the latest software updates so I am at a bit of a loss as to what might be the problem baring a hardware issue.

"I have a 4 year old iMAC G5"
If your model is NOT the iSight model, then you will be able to remove the back cover to clean off the accumulated dust from the fans. See Knowledge Base Article http://docs.info.apple.com/article.html?artnum=300205 iMac G5 DIY (Do-It-Yourself) Instructions for your model G5 iMac.
If you have the iSight model then it is NOT user repairable. You will need to take it a repair shop for cleaning. Do you by any chance have ProCare?

Similar Messages

Fans at High Speed

I am currently transferring files from my G5 to my new 24". The fans on my G5 are whirring at a very high speed. Is this normal? If it takes a while for the transfer, I'm afraid the fans will burn out or something.

Its normal for them to rev up if there is alot of heat. Its not normal to just be really loud for no reason
Its possible that resetting the PRAM and PMU would resolve it it keeps happening after the transfer.

LX835 fan cycles on and off (and on and off and...) at idle since 6.20 BIOS

Hi,
I have a new-ish LX835-D3215 AIO.
The fan started to cycle on and of constantly about every 30-50 seconds (off) and 10-20 second (on) when the computer is at idle. The CPU temp is about 30% and constant and the fan runs up to 75% of max speed; both according to the PC Health monitor. It does this even when the PC is supposedly sleeping. The computer did not do this OOB, but I believe it started after the 6.20 BIOS upgrade. I have recently upgraded to Win 8 but that has not helped (nor worsened) the problem. The fan winding-up and winding down noise is really infuriating! It is much more intrusive than when the fan runs constantly during normal operation, which is at about 75% and CPU at 42% temperature.
I am disabled and I bought this computer to place by my bedside, and it has become a big disappointment. I have to power down/up or manually hibernate it. (I recently added hibernate for this purpose). I have noted a few other posts of similar fan cycling issues in the forum.
Many thanks for any help. Anyone - please!

I figured it out. Here is what you do; Shut down your mac, then unplug the power cord. Turn your Mac back on and close the lid immediately. That solved my problem.

I'm wondering if anyone else has had problems with their imac fans being extremely loud when running at slow speeds? When the computer heats up enough for the fans to run at higher speeds they quiet down. New HD fan was just installed.

I have an imac that I've had for a couple years. The fans have always been loud when running at the slower speeds. When the computer heats up enough for the fans to run at a higher speed the fans quiet down. I had installed SMC fan control after multiple attempts with Apple to get the fan issue resolved. That seemed to keep the fans quiet enough. I've never had a problem with overheating. Recently the fans were becoming loud again even running at the slightly higher speeds so I took it to my local Apple store and they replaced the hard drive fan. I got it back and it's now as loud or louder than ever!! And, now SMC fan control won't "stick." The fans will speed up, but then gradually go back to the lower "loud" levels. I'm at a loss as to what to do next.

Thanks jared,
I'm still dealing with this issue through Apple. Some time after I posted this, I contacted Apple again. They did start a case up for me, as I was experiencing the same behavior on two different machines, with two different versions of Windows.
So far it remains unsolved. I've logged iClouds for Windows on my desktop, which is brand new, then logged for awhile after completely uninstalling Norton Security Suite, depending on the Microsoft security for some time, and finally logged after I uninstalled iCloud for Windows, restarted, installed a clean download, and connected using a completely different test account, which Apple set up for me. None of this made any difference. Looking at the logs, it seems every 10 minutes, iCloudServices.exe creates a new TCP connection to confirm I'm using less than 5GB on iCloud, (which I am by a good margin, using less than 2GB), it seems this connection is not closed, and when the next iteration rolls around 10 minutes later, a new TCP connection is created. I come very close to having 6 TCP connections created per hour, until I restart my computer. This works out to... 6 x 24 = 144/day.
Perhaps the article you posted will shed some further light on this. I'm thinking seeing the state of the connection through netstats, at the least, could help.
For the last week, I've been putting a hold on further logging, as Apple wants me to create a new user account on one of my computers, install iCloud for Windows there, and log it running in the other account. This however basically means I cannot use my computer for a fair number of hours, and I've been busy enough with work the past week that I haven't the time or energy to afford to set this up and run it. I've had need of my computers too much for the past week.

Qosmio F50-10Z - fan cycling on and off even when idle

My f50 is constantly turning the fan on and off every couple of minutes, even when the machine is idle and has not run any applications.
SpeedFan shows that the GPU is cycling constantly between 55 and 65 degrees C even when there are no apps running (e.g. just after booting) - the fan kicks in at 65, turns off at 55 and then slowly heats up again. The fan noise is noticeable (I don't think it is going full speed, though), and it is a bit abrupt and annoying to be happening constantly and doesn't seem like normal behavior. Core 1 and 2 on Speedfan are cycling between 40 and 45 C
Outside temperature is 20 degrees, so the environment is unlikely to be a factor. I've air blasted the fan for dust (as much as you can seeing as the f50 isn't built to be taken apart by a Home User), but even when the fan is running the output doesn't seem noticeably hot.
I'm am only running toshiba drivers from the website (currently 7.15.11.7590)
My main concern is that this will negatively impact the life of the fan. Am I being overly picky or is there something I could be doing?
Thanks for any advice

Thanks for the reply Lars_3.
The notebook came with Windows Home Premium pre-installed - I haven't replaced the OS at all, though I have created a recovery disk at the urging of OS when I first booted it.
The BIOS is up-to-date as I use the Toshiba Tempro service (which again was pre-installed) and occasionally check with the website to make sure I haven't missed anything. I don't like the idea of installing drivers or anything else not released by Toshiba as I've seen people mentioning overheating shutdowns (at much higher temps) from using non-f50 drivers. I regularly keep the base elevated to enhance air circulation, and clean the intakes with compressed air, but it doesn't seem to make much difference.
Everything else works perfectly (and I'm a happy customer) except for the noise factor of the fan switching on every two minutes during even light use (not even 3d game use, which I assume would utilise the 3d card more and be expected to come with greater fan use).

Fans go crazy every 2 days; constant SMC reset

So every 2 days I find my fans spinning at high speed, and the only way to fix the problem seems to be reset SMC. Anyone have a similar problem or thoughts on how to permanently fix the issue?

I have a similar problem, but the timing isn't as precise. I can turn on my machine and it will run for a few hours or a few days and then, according to iStat, the HD Expansion and Exhaust fan RPMs go way up and do not come down until I power-off. The cycle repeats, with random timing, when I power on again. I don't think it's the temperature sensor(s) as the fans appear to work for a period of time. Unless it's a case of the temperature reaching a certain value and the sensor then holding that value until power off. But that seems like an odd failure mode. iStat indicates normal operating temperatures for all components. I suspect it's a firmware issue. I have seen a number of fan related posts and I wish Apple would address this.

Envy 14 1095la. High pitched whine sound and fan cycling.

Hi. I'm in contact with the customer service about 2 (and a 3rd maybe related) annoyances I have on my Envy 14 1095la (XC515LA#ABM) notebook. I want to share them here in case someone has some clues and guidance about them.
Fan cycles continously on and off every couple of seconds
... on light usage (using the low performance GPU and a text editor).
Reading the temps using Coretemp and HDinfo, I can hear the fan kicking in when CPU temp is above 35º and turning off when it reverts back to this value.
Enabling the "FAN ALWAYS ON" option on the BIOS (as suggested by the tech guy) has no effect over the problem (yes, the fan remains always on, but you can still hear it cycling RPM constantly).
Since this model has no option to regulate the FAN via software, the only solution seems to be a BIOS upgrade.
Sometimes, I can hear a high pitched sound coming from the computer.
Tech guy suggested me to experiment a bit with this to better understand what can be the problem. I've found so far:
Seems to be far more frequent if the battery is in place (without the battery I heard it only once, and quiet).
Seems to be more louder if the battery is in use.
The sound seems to originate from the Seagate Momentus HD, but It is so high pitched that makes difficult to point the exact origin.
Messing with the sound options (muting mics, audio etc) seems to have no effect.
Sometimes I feel a strong vibration on the palmrest
Perhaps related to the previous, sometimes I can feel a strong vibration on the right palmrest.
Resting the notebook over different surfaces (or lifting it in the air) seems to have no effect.
Reading a bit on this forum I can see that the Seagate Momentus HD is a strong candidate for the vibration+high pitched sound problem, but again, if anyone has a better idea or an aditional test I can made to be sure, is welcomed.
Thanks!

Well, notebook is out for repair.
I've in touch with a level 2 support guy that acknowledged that the "fan cycling" thing is odd and will pass a report to the engineer team (hope HP is not lazy because the Envy refresh and new BIOSes).
About the high pitched noice and vibrations, they will check the HD, but since SMART values are alright, I doubt they´ll change it.

Okay so my phone crashes approximately every 30 seconds. I have tried resetting it by DPU as well as on the phone itself. Once in awhile i get an error message about unknown error 1. If i look at the diagnosis or if runs on itunes i get the following i

Okay so my phone crashes approximately every 30 seconds. I have tried resetting it by DPU as well as on the phone itself. Once in awhile i get an error message about unknown error 1. If i look at the diagnosis or if runs on itunes i get the following. When I called the support at AT&T they think the phone is shot and it is a hardware thing but i have a hard time believing that when it happened when I sync'd it to my computer. It did get progressively worse though, at first it crashed not that often and then got worse. So restores are failing, recovery, everything. Anyone run into this?
11-11-16 18:20:36.319 [2232:16dc]: amai: tss_submit_job: HttpQueryInfo returned 200
2011-11-16 18:20:38.350 [2232:1c50]: <DFU Device 0F128BE0>: production fused device
2011-11-16 18:20:38.350 [2232:1c50]: unable to open device_map.txt: No such file or directory
2011-11-16 18:20:38.350 [2232:1c50]: WinDFU::OpenDeviceByPath: \\?\USB#VID_05AC&PID_1227#{B8085869-FEB9-404B-8CB1-1E5C14FA8C54}\0000#1bfe4c4c
2011-11-16 18:20:39.132 [2232:1c50]: WinDFU::UploadData: EOF, cbRead: 553
2011-11-16 18:20:39.147 [2232:1c50]: WinDFU::UploadData: ZLP
2011-11-16 18:20:39.163 [2232:1c50]: WinDFU::FinalizeDfuUpdate: GetStatus: status: 0, state: 6
2011-11-16 18:20:39.163 [2232:1c50]: WinDFU::ProcessUpdateState: status.bState == DFU_STATE_MANIFEST_SYNC
2011-11-16 18:20:39.163 [2232:1c50]: WinDFU::FinalizeDfuUpdate: GetStatus: status: 0, state: 7
2011-11-16 18:20:39.163 [2232:1c50]: WinDFU::ProcessUpdateState: status.bState == DFU_STATE_MANIFEST, PollTimeout: 3000
2011-11-16 18:20:42.163 [2232:1c50]: WinDFU::FinalizeDfuUpdate: GetStatus: status: 0, state: 8
2011-11-16 18:20:42.163 [2232:1c50]: WinDFU::ProcessUpdateState: status.bState == DFU_STATE_MANIFEST_WAIT_RESET
2011-11-16 18:20:42.163 [2232:1c50]: WinDFU::ResetDevice: resetting...
2011-11-16 18:21:02.210 [2232:1c50]: WinDFU::FinalizeDfuUpdate: success
2011-11-16 18:21:03.491 [2232:c4c]: AppleDevice::EnumerateHubPorts: DoesDriverNameMatchDeviceID failed
2011-11-16 18:21:03.507 [2232:c4c]: WinAMRestore::AddAppleDeviceToDeviceList, old disconnected device connects again
2011-11-16 18:21:03.757 [2232:c4c]: AppleDevice::EnumerateHubPorts: DoesDriverNameMatchDeviceID failed
2011-11-16 18:21:04.554 [2232:1b88]: amai: tss_submit_job: HttpQueryInfo returned 200
2011-11-16 18:21:10.882 [2232:1b88]: <DFU Device 0F198478>: production fused device
2011-11-16 18:21:10.882 [2232:1b88]: unable to open device_map.txt: No such file or directory
2011-11-16 18:21:10.882 [2232:1b88]: WinDFU::OpenDeviceByPath: \\?\USB#VID_05AC&PID_1227#{B8085869-FEB9-404B-8CB1-1E5C14FA8C54}\0000#cfe11997
2011-11-16 18:21:12.788 [2232:1b88]: WinDFU::UploadData: EOF, cbRead: 1321
2011-11-16 18:21:12.804 [2232:1b88]: WinDFU::UploadData: ZLP
2011-11-16 18:21:12.819 [2232:1b88]: WinDFU::FinalizeDfuUpdate: GetStatus: status: 0, state: 6
2011-11-16 18:21:12.819 [2232:1b88]: WinDFU::ProcessUpdateState: status.bState == DFU_STATE_MANIFEST_SYNC
2011-11-16 18:21:12.819 [2232:1b88]: WinDFU::FinalizeDfuUpdate: GetStatus: status: 0, state: 7
2011-11-16 18:21:12.819 [2232:1b88]: WinDFU::ProcessUpdateState: status.bState == DFU_STATE_MANIFEST, PollTimeout: 3000
2011-11-16 18:21:15.819 [2232:1b88]: WinDFU::FinalizeDfuUpdate: GetStatus: status: 0, state: 8
2011-11-16 18:21:15.819 [2232:1b88]: WinDFU::ProcessUpdateState: status.bState == DFU_STATE_MANIFEST_WAIT_RESET
2011-11-16 18:21:15.819 [2232:1b88]: WinDFU::ResetDevice: resetting...
2011-11-16 18:21:20.866 [2232:1b88]: WinDFU::FinalizeDfuUpdate: success
2011-11-16 18:21:21.835 [2232:c4c]: AppleDevice::EnumerateHubPorts: DoesDriverNameMatchDeviceID failed
2011-11-16 18:21:21.835 [2232:c4c]: WinAMRestore::AddAppleDeviceToDeviceList, old disconnected device connects again
2011-11-16 18:21:21.897 [2232:c4c]: AppleDevice::EnumerateHubPorts: DoesDriverNameMatchDeviceID failed
2011-11-16 18:21:22.054 [2232:1838]: AMDeviceIoControl: GetOverlappedResult failed
2011-11-16 18:21:22.054 [2232:1838]: AMDeviceIoControl: pipe stall
2011-11-16 18:21:22.054 [2232:1838]: USBControlTransfer: error 31, usbd status c0000004
2011-11-16 18:21:22.054 [2232:1838]: command device request for 'getenv radio-error' failed: 2008
2011-11-16 18:21:22.054 [2232:1838]: unable to open device_map.txt: No such file or directory
2011-11-16 18:21:22.054 [2232:1838]: <Recovery Mode Device 0F2A7768>: production fused device
2011-11-16 18:21:24.007 [2232:1838]: AMDeviceIoControl: GetOverlappedResult failed
2011-11-16 18:21:24.007 [2232:1838]: AMDeviceIoControl: pipe stall
2011-11-16 18:21:24.007 [2232:1838]: USBControlTransfer: error 31, usbd status c0000004
2011-11-16 18:21:24.007 [2232:1838]: command device request for 'getenv ramdisk-delay' failed: 2008
2011-11-16 18:21:38.319 [2232:1344]: fixed TcpWindowSize (64512) can cause restore failure if too large
2011-11-16 18:21:38.335 [2232:1344]: unable to open device_map.txt: No such file or directory
2011-11-16 19:21:54.475 [2232:1344]: amai: AMAuthInstallBasebandHandleUpdaterStatus: outputDict is NULL
2011-11-16 19:21:54.538 [2232:1344]: <Restore Device 0ED73918>: Restore failed (result = 1)
2011-11-16 19:21:54.647 [2232:8ec]: iTunes: Restore error 1
2011-11-16 19:22:09.100 [2232:c4c]: AppleDevice::EnumerateHubPorts: DoesDriverNameMatchDeviceID failed
2011-11-16 19:22:09.100 [2232:c4c]: WinAMRestore::AddAppleDeviceToDeviceList, old disconnected device connects again
2011-11-16 19:22:09.163 [2232:c4c]: AppleDevice::EnumerateHubPorts: DoesDriverNameMatchDeviceID failed
2011-11-16 19:37:25.319 [2232:c4c]: AppleDevice::EnumerateHubPorts: DoesDriverNameMatchDeviceID failed
2011-11-16 19:37:25.335 [2232:c4c]: WinAMRestore::AddAppleDeviceToDeviceList, old disconnected device connects again
2011-11-16 19:37:25.382 [2232:c4c]: AppleDevice::EnumerateHubPorts: DoesDriverNameMatchDeviceID failed
2011-11-16 19:52:41.679 [2232:c4c]: AppleDevice::EnumerateHubPorts: DoesDriverNameMatchDeviceID failed
2011-11-16 19:52:41.679 [2232:c4c]: WinAMRestore::AddAppleDeviceToDeviceList, old disconnected device connects again
2011-11-16 19:52:42.163 [2232:c4c]: AppleDevice::EnumerateHubPorts: DoesDriverNameMatchDeviceID failed
I also get a system crash reporter key of c392e98c929aa0b351037af00d75d08aeadc843c bug type 110
incident identifier 8ff84a87

Errors 3000-3999 (3004, 3013, 3014, 3018, 3164, 3194, and so on): Error codes in the 3000 range generally mean that iTunes cannot contact the update server (gs.apple.com) on ports 80 or 443.
Update to the latest version of iTunes.
Verify the computer's date and time are accurate.
Check that your security or firewall software is not interfering with ports 80 or 443, or with the server gs.apple.com.
Follow Troubleshooting security software. Often, uninstalling third-party security software will resolve these errors.
An entry in your hosts file may be redirecting requests to gs.apple.com (see "Unable to contact the iOS software update server gs.apple.com" above).
Internet proxy settings can cause this issue. If you are using a proxy, try without using one.
Test restoring while connected to a known-good network.

I have an iMac OS 10.9.5 - Every time I turn on my system I get the message that it can not access icloud and to fix it using iCloud preferences. I do not want to access or use iCloud, how do I get the message to discontinue?

I have an iMac OS 10.9.5 - Every time I turn on my system I get the message that it can not access icloud and to fix it using iCloud preferences. I do not want to access or use iCloud, how do I get the message to discontinue?

Hello mrmacjohn,
Verifying that any iCloud account that may be signed in is signed out should resolve this error.
On your Mac, open iCloud preferences, then click Sign Out.
iCloud: Change iCloud feature settings
http://support.apple.com/kb/PH2613
Cheers,
Allen

Every keystroke and mouse movement, I get an audio notice that I need to shut off. In Safari, the cursor cycles thru every link and metadata field and I get a verbal/audio notice of what it is. How do I shut this option off???

Every keystroke and mouse movement, I get an audio notice that I need to shut off. In Safari, the cursor cycles thru every link and metadata field and I get a verbal/audio notice of what it is. How do I shut this option off???

Press the key combination command-F5 to deactivate VoiceOver. If that doesn't work, proceed as follows.
For OS X 10.7: From the menu bar, select
 ▹ System Preferences ▹ Universal Access ▹ Seeing ▹ VoiceOver: Off
For OS X 10.8 or later: Select
 ▹ System Preferences ▹ Accessibility ▹ VoiceOver ▹ Enable VoiceOver: Off

Possible solution iMac cooling fan stuck on high and loud

Had iMac go to sleep and just died, no lights or anything, power switch ignored me. Unplugging from wall, holding button in various ways on and after power up did not help in any way. Read articles on knowledge base and googled the web. Finally decided to pull out the round power plug on the rear of the iMac which to a regular user does not even look like it comes loose but it does. I checked the end with a volt meter and saw 120 volts ac and knew the cord was good. Plugged it into the Imac then momentarily touched the power switch and wham the iMac came on with a fury and the fan on super high speed. I'd never heard any of the iMacs in the house ever sound this loud, even on hot summer days. Pulled my hair out for a while but then repeated the steps removing the power cord from the back of the iMac, not the floor, and this time I pressed and held the power switch after plugging the AC back in and held it until I heard a beep, maybe 10+ sec. Of course I knew this worked because I could hear the iMac coming on quietly but making normal noises the moment I touched and held the power button. Now the system is working great again and I,m not looking at bringing it into a service center for no reason and injected more possible problems. I started another topic on the power on issue but I just wanted to document what I found and make it easier for someone else to get a search hit on a solution.
Here's the other thread and hope it helps someone else.
http://discussions.apple.com/messageview.jspa?messageID=9424884&stqc=true

Do a SMC reset and if that doesn't fix it back to the store you go!
SMC RESET
Shut down the computer.
Unplug the computer's power cord and all peripherals.
Press and hold the power button for 5 seconds.
Release the power button.
Attach the computers power cable.
Press the power button to turn on the computer.
PRAM RESET
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

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!

HT201295 Late 2009 Intel iMac Needs Frequent SMC reset - constant high speed running fan

Late 2009 Intel iMac is having reoccurring episodes of high speed fan running, especially after waking it up. The SMC reset by unplug and reboot works, but I worry that this is a serious sign and that the machine is slowly dying. Any thoughts? Works fine otherwise.

wolfgang272 wrote:
Do you have any ideas?
Yes, you just need to reset the SMC and you should be fine
https://support.apple.com/kb/HT3964
Whoops you already did that.
Hardware Test then
https://support.apple.com/kb/ht1509
Read more info here
https://discussions.apple.com/message/16276201#16276201

Running hot, fan comes on every few minutes

I have recently had my powerbook G4 in for repairs to the LCD 5 times in the past few months. Now, it has started running hotter than usual and the fan comes on every few minutes while I am working.
Any ideas about what might be going on would be appreciated.

Maybe a short circuit somewhere at the LCD panel that causes the PB becoming hot very soon. Was the LCD issue a warranty repair ?
I would ask the company that did the repair, respectively Apple (if it was a warranty) for assistance.

Late 2014 iMac 5K running unusually slowly with fans running at high speed

Problem description:
iMac 5K
The computer is running unusually slowly although it is not experiencing high CPU utilization.
The computer's fans run at high speed although the computer is not experiencing heavy usage.
Apple Diagnostics points to SMC problem.
SMC and PRAM resets have not worked.
See Etre Report below.
Thanks for help.
Herbie49
EtreCheck version: 2.1.8 (121)
Report generated 30. März 2015 07:32:40 MESZ
Download EtreCheck from http://etresoft.com/etrecheck
Hardware Information: ℹ️
    iMac (Retina 5K, 27-inch, Late 2014) (Technical Specifications)
    iMac - model: iMac15,1
    1 4 GHz Intel Core i7 CPU: 4-core
    32 GB RAM Upgradeable
        BANK 0/DIMM0
            8 GB DDR3 1600 MHz ok
        BANK 1/DIMM0
            8 GB DDR3 1600 MHz ok
        BANK 0/DIMM1
            8 GB DDR3 1600 MHz ok
        BANK 1/DIMM1
            8 GB DDR3 1600 MHz ok
    Bluetooth: Good - Handoff/Airdrop2 supported
    Wireless: en1: 802.11 a/b/g/n/ac
Video Information: ℹ️
    AMD Radeon R9 M295X - VRAM: 4096 MB
        iMac spdisplays_5120x2880Retina
System Software: ℹ️
    OS X 10.10.2 (14C1514) - Time since boot: 0:31:53
Disk Information: ℹ️
    APPLE SSD SM0512F disk1 : (500,28 GB)
        EFI (disk1s1) <not mounted> : 210 MB
        Macintosh SSHD (disk1s2) / : 499.42 GB (251.32 GB free)
        Recovery HD (disk1s3) <not mounted> [Recovery]: 650 MB
    Samsung SSD 840 EVO 750GB disk0 : (750,16 GB)
        EFI (disk0s1) <not mounted> : 210 MB
        Herbies Daten (disk0s2) /Volumes/Herbies Daten : 749.30 GB (299.14 GB free)
        Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
USB Information: ℹ️
    Apple Inc. BRCM20702 Hub
        Apple Inc. Bluetooth USB Host Controller
    Apple Inc. FaceTime HD Camera (Built-in)
    Apple, Inc. Keyboard Hub
        Apple Inc. Apple Keyboard
Thunderbolt Information: ℹ️
    Apple Inc. thunderbolt_bus
Gatekeeper: ℹ️
    Anywhere
Kernel Extensions: ℹ️
        /Applications/Toast 11 Titanium/Spin Doctor.app
    [not loaded]    com.hzsystems.terminus.driver (4) [Click for support]
        /Library/Application Support/Symantec/AntiVirus
    [not loaded]    com.symantec.kext.SymAPComm (11.1.2f18) [Click for support]
        /System/Library/Extensions
    [not loaded]    com.Logitech.Control Center.HID Driver (2.4.0) [Click for support]
    [not loaded]    com.symantec.kext.internetSecurity (1.3.2f5) [Click for support]
    [not loaded]    com.symantec.kext.ips (3.2f8) [Click for support]
        /Users/[redacted]/Library/Services/ToastIt.service/Contents/MacOS
    [not loaded]    com.roxio.TDIXController (2.0) [Click for support]
Startup Items: ℹ️
    ProTec6b: Path: /Library/StartupItems/ProTec6b
    Startup items are obsolete in OS X Yosemite
Launch Agents: ℹ️
    [not loaded]    com.adobe.AAM.Updater-1.0.plist [Click for support]
    [loaded]    com.adobe.CS5ServiceManager.plist [Click for support]
    [running]    com.symantec.uiagent.application.plist [Click for support]
    [not loaded]    com.teamviewer.teamviewer.plist [Click for support]
    [not loaded]    com.teamviewer.teamviewer_desktop.plist [Click for support]
Launch Daemons: ℹ️
    [loaded]    com.adobe.fpsaud.plist [Click for support]
    [loaded]    com.adobe.SwitchBoard.plist [Click for support]
    [loaded]    com.bombich.ccc.plist [Click for support]
    [loaded]    com.microsoft.office.licensing.helper.plist [Click for support]
    [loaded]    com.symantec.avscandaemon.plist [Click for support]
    [running]    com.symantec.diskMountNotify.plist [Click for support]
    [failed]    com.symantec.MissedTasks.plist [Click for support]
    [loaded]    com.symantec.navapd.plist [Click for support]
    [loaded]    com.symantec.navapdaemonsl.plist [Click for support]
    [loaded]    com.symantec.Sched503-1.plist [Click for support]
    [loaded]    com.symantec.Sched505-3.plist [Click for support]
    [running]    com.symantec.sharedsettings.plist [Click for support]
    [running]    com.symantec.symdaemon.plist [Click for support]
    [failed]    com.symantec.symSchedDaemon.plist [Click for support]
    [not loaded]    com.teamviewer.teamviewer_service.plist [Click for support]
    [loaded]    de.meilenstein.MSTFirstRunInstaller.plist [Click for support]
User Launch Agents: ℹ️
    [loaded]    com.adobe.AAM.Updater-1.0.plist [Click for support]
    [loaded]    com.adobe.ARM.[...].plist [Click for support]
    [failed]    com.adobe.ARM.[...].plist [Click for support] [Click for details]
    [loaded]    com.adobe.ARM.[...].plist [Click for support]
    [loaded]    com.google.keystone.agent.plist [Click for support]
    [loaded]    de.starface.STARFACE-Client.plist [Click for support]
    [running]    ws.agile.1PasswordAgent.plist [Click for support]
User Login Items: ℹ️
    Notizzettel    Programm Hidden (/Applications/Stickies.app)
    Adobe Reader    Programm (/Applications/Adobe Reader.app)
    Dropbox    Programm (/Applications/Dropbox.app)
    SpyderUtility    Programm (/Applications/Datacolor/Spyder4Pro/Support/SpyderUtility.app)
    PopChar    Programm (/Applications/PopChar.app)
    STARFACE Client    Programm (/Users/[redacted]/Desktop/STARFACE Client.app)
Internet Plug-ins: ℹ️
    Google Earth Web Plug-in: Version: 7.0 [Click for support]
    Default Browser: Version: 600 - SDK 10.10
    AdobeExManDetect: Version: AdobeExManDetect 1.1.0.0 - SDK 10.7 [Click for support]
    Flip4Mac WMV Plugin: Version: 3.2.0.16   - SDK 10.8 [Click for support]
    OfficeLiveBrowserPlugin: Version: 12.2.8 [Click for support]
    AdobePDFViewerNPAPI: Version: 10.1.5 [Click for support]
    FlashPlayer-10.6: Version: 17.0.0.134 - SDK 10.6 [Click for support]
    Silverlight: Version: 5.1.10411.0 - SDK 10.6 [Click for support]
    Flash Player: Version: 17.0.0.134 - SDK 10.6 [Click for support]
    QuickTime Plugin: Version: 7.7.3
    iPhotoPhotocast: Version: 7.0
    SharePointBrowserPlugin: Version: 14.4.8 - SDK 10.6 [Click for support]
    AdobePDFViewer: Version: 10.1.5 [Click for support]
    JavaAppletPlugin: Version: 15.0.0 - SDK 10.10 Check version
User internet Plug-ins: ℹ️
    RealPlayer Plugin: Version: Unknown
Safari Extensions: ℹ️
    1Password
    ExifExt
Audio Plug-ins: ℹ️
    DVCPROHDAudio: Version: 1.2
3rd Party Preference Panes: ℹ️
    Flash Player [Click for support]
    Flip4Mac WMV [Click for support]
    Growl [Click for support]
    Norton\nQuickMenu [Click for support]
Time Machine: ℹ️
    Skip System Files: NO
    Mobile backups: OFF
    Auto backup: YES
    Volumes being backed up:
        Macintosh SSHD: Disk size: 499.42 GB Disk used: 248.10 GB
    Destinations:
        Backups [Network]
        Total size: 6.00 TB
        Total number of backups: 39
        Oldest backup: 2015-01-31 05:27:48 +0000
        Last backup: 2015-03-27 20:28:54 +0000
        Size of backup disk: Excellent
            Backup size 6.00 TB > (Disk size 499.42 GB X 3)
Top Processes by CPU: ℹ️
         5%    WindowServer
         0%    Dropbox
         0%    SymDaemon
Top Processes by Memory: ℹ️
    241 MB    Mail
    206 MB    Finder
    172 MB    Safari
    137 MB    Stickies
    137 MB    WindowServer
Virtual Memory Information: ℹ️
    29.20 GB    Free RAM
    2.79 GB    Active RAM
    721 MB    Inactive RAM
    1.64 GB    Wired RAM
    1.34 GB    Page-ins
    0 B    Page-outs
Diagnostics Information: ℹ️
    Mar 30, 2015, 06:58:02 AM    /Library/Logs/DiagnosticReports/deleted_2015-03-30-065802_[redacted].crash
    Mar 30, 2015, 06:55:24 AM    Self test - passed

First uninstall your antivirus. Use only a vendor-provided uninstaller or uninstallation instructions. Never remove files by hand. Never use an "app zapper".
If that doesn't fix it, take it back to Apple for service.

IMAC G5 Fans Cycle approximately every 5 to 10 minutes to higher speed

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