Drive bay fan speed

hi all
my drive bay fan speed is way above the rest is this a problem on the way ?
cpu a intake 365 rpm
cpu b intake 355 rpm
cpu a exhaust 373 rpm
cpu b exhaust 367 rpm
DRIVE BAY 1000 rpm
slots 76 rpm
backside 51 rpm
all the fan speeds move up and down apart from drive bay that stays put at 1000rpm
g5 2ghz

Sitting here on a cool, cloudy day down here in Paradise, I am seeing the CPU fans "idling" between 300 and 450, only running up into the 1-2K ranges if for some reason the CPU starts running up in usage. Drive bay is a constant 1K, slot is 127 and backside is 51.
What's funny is popping the dashboard causes a run-up for about 4-5 seconds, then things calm back down.
Of course, a couple of weeks ago, those numbers were much higher, but then again, ambient was up maybe 15° F.

Similar Messages

Drive bay fan question

I'm pretty new to the g5 so this might be a dumb question.
Several times a minute the drive bay fan speeds up to around 2500rpm for about 10 seconds and then goes back down to 1000rpm. when this happens, istat shows the drive bay temp jumping from 32c to around 110c and then back down. Seems like a big temp jump in a matter of a few seconds. Hard drive reads a constant temp of 38c. Happens wether the cpus are idle or not. Is this normal or should I be concerned? Working in a quiet room it's kind of annoying.
Thank you mac gods
Jeff

Hi-
Replacing the sensor looks to be fairly easy.
Remove the hard drives, pry the board from the top of the case, unplug the cable from the logic board, and thread the cable out.
Install is the reverse, with two sided tape needed to attach the new sensor board to the tower top.
What I am unsure of, is whether or not Thermal calibration is necessary after this.
I believe that it won't be necessary, but it is a possibility.
If it were necessary, finding a copy of the Apple Service Disc (ASD) 2.5.7 would be necessary.
It is out there, so not a big worry......
The fans should be fine, as most fans are rated at 2,000-5,000 RPM for 60,000 or more hours.

Drive Bay Fan

Hi,
I have a dual 1.8 G5 produced in July of 2004. Recently I noted an oscillating whistle sound coming from the computer, not too loud, and with my handy stethoscope localized it to the Drive Bay Fan. With Hardware monitor the drive bay fan runs constantly at 1000 rpm, which is right, so no problem there. A bad bearing I suppose. So I would like to get a new fan and replace it. Consulting various parts outlets and their diagrams of the G5, none of them show or list a 'drive bay fan'. There is a PCI fan, which is the one paired with the speaker in front. The drive bay fan is at the top of the machine (in the drive bay), in the section where the optical drive and the hard drives are located.
Does anyone know anything about this?
Thanks, Ray

I can't even find the drive bay fan in the service manual. Nothing in the parts list. ??
You might try calling Heartland Business Systems and ask for the Apple service department. They may be able to help you out.
1-800-236-7914
-Bmer
Mac Owners Support Group
Join Us @ MacOSG.com
 An Apple User Group 
MacOSG Podcast >>

Drive Bay Fan Slowly Spins Up

I Do music , Its noisy , so it really gets annoying... It never used to do this.
Information Using iStat pro , shows my drive bay fan to get faster and faster, eventually over 3000rpm.., yet the temperature remains Solid at 33 degrees C. Is there a Software fix for this ?

I used to get this occasionaly when I did repairs on these machines. It is one of two things, either you may have a problem with your logic board, or you may just need a thermal calibration. The thermal calibration can be done using the Apple ASD disks they have at the apple repair facilities (ie apple store or Service center). I think this may solve your issue. Good luck

Drive bay fans high rpm and whine.

High RPMs and a whining noise (i.e. fan noise) with iStat Pro widget displaying high (2,700+ rpms) for my drive bay.
I see that on my G5 one of the fans is located so that I can not blast it with canned air so as to rid it of dust build up... which is probably why there is a low decibel but high pitched noise when the drive bay fans rev up.
Any ideas on how to get to it without having to completely take my tower apart?
I've had my Energy system preference set to 'Highest' for a long time (since I read that overall this can prevent fan rpms from going extremely high) and it seems to have been okay.
But I'm guessing that over the years this one fan... which can not be blown off... has accumulated lots of dust that is causing the problem.
Any advice would be greatly appreciated.
Thanks.

"I've tried to monitor Console....."
Activity Monitor (AM--in Applications > Utilities) is the better reporter of what's causing excessive fan activity as it calculates the CPU usage of each process. If you have not launched AM before, its default settings will not show enough detail to help. However, all you need to do to get a full picture of the load on your processor is to change AM's "Show" option from "My Processes" to "All Processes." Once changed, that setting is retained. Looks like this:
Others are reporting heating issues and short battery runtime after upgrading to 10.6.8. They all had Parallels emulation software installed. If you use Parallels, see this:
http://kb.parallels.com/en/111541
It could be your culprit.

How to replace hard drive bay fan?

The fan in my G5 tower dual 1.8 Ghz in the top bay - optical/hard drive bay - has started to make noise. I bought a replacement, but I don't see any way to get the old one out. It sits in a little depression in the bay floor, and even if I got out the 3 screws holding it in place, it won't tilt far enough front or back to slide out.
Anyone know of any write-up anywhere about how to replace this fan assembly?

Those two fans (media bay fans) are only given a mention in the "official" service manual.
The drive fan and blower located between the optical and hard drives cannot be
replaced. You must replace the enclosure for these two parts.
Does this mean the "entire" enclosure, as in the tower, or just an enclosure for the fans held to the tray of the media bay?
I don't know.
Maybe someone who has done this can offer advice, but it seems that there is a need for someone to write a manual for that procedure.
Message was edited by: japamac

Powermac g5 7,3 drive bay fan: 2fan/4/7: drive bay error

Hello
I have a problem with my G5 Powermac. It is an G5 dual 2x2Ghz late 2004 7,3. 5 Gb. ram. Running Leopard. I am in a real trouble
A week ago, the system showed the black transparent screen of critic error ("press the power button for several seconds...") I started the system again and showed problems
I ran the hardware test disc. It showed "2fan/4/7: drive bay" error
Then I replaced the battery for a new one, then I reset the PMU and PRAM
Computer turned on. 15 min of normal use. It showed the error screen again.
Every time I reset the PMU, the fan works, but now it gets stopped in the gray window, and the apple logo is replaced by the "forbidden" icon
It´s a very complicated situation to replace this fan, because you have to disassemble the whole main board to replace the fan in the top floor (the drive bay) and I am not sure that it is a problem of the fan (plus, you have to find a second hand part, it is discontinued) and I think I could "hurt" the computer trying to replace it by my self
Sorry for my poor english. I´m from Spain
Any help will be appreciated
Thank You

I tried to boot it on safe mode this morning. It showed the forbidden icon on gray screen at startup. I waited for a while and tried again in normal mode. Booted perfectly and showed me the log about the crash. I place it here, but I can't give it format because I write from my iPod and it doesn't show the tools, only the text box:
Interval Since Last Panic Report: 2254 sec
Panics Since Last Report:          6
Anonymous UUID:                    063639A2-A1B3-4A98-8362-76E48FF06710
Thu May 12 10:52:10 2011
panic(cpu 0 caller 0x000AD128): simple lock (0x00453220) deadlock detection, pc=0x0003F910
Latest stack backtrace for cpu 0:
      Backtrace:
         0x0009CC88 0x0009D63C 0x00029DA0 0x000AD128 0x0003F910 0x00034384 0x00037594 0x00042490
         0x0003F868 0x0004086C 0x000BB934 0x000B63A4 0x000B48B8
Proceeding back via exception chain:
   Exception state (sv=0x59992000)
      PC=0x000B7EDC; MSR=0x00009000; DAR=0x61A96000; DSISR=0x42000000; LR=0x00035620; R1=0x61D9FD60; XCP=0x00000024 (0x900 - Decrementer)
      Backtrace:
0x0003560C 0x00035EB4 0x00036B7C 0x000B1DD4
   Exception state (sv=0x103ea00)
      PC=0x00000000; MSR=0x0000D030; DAR=0x00000000; DSISR=0x00000000; LR=0x00000000; R1=0x00000000; XCP=0x00000000 (Unknown)
BSD process name corresponding to current thread: kernel_task
Mac OS version:
Not yet set
Kernel version:
Darwin Kernel Version 9.8.0: Wed Jul 15 16:57:01 PDT 2009; root:xnu-1228.15.4~1/RELEASE_PPC
System model name: PowerMac7,3
System uptime in nanoseconds: 23328410180
unloaded kexts:
(none)
loaded kexts:
com.apple.driver.AppleHIDKeyboard     1.0.9b4 - last loaded 766564865
com.apple.iokit.IOUSBHIDDriver     3.4.6
com.apple.driver.AppleUSBMergeNub     3.5.2
com.apple.driver.PioneerSuperDrive     2.0.9
com.apple.iokit.SCSITaskUserClient     2.1.1
com.apple.driver.XsanFilter     2.7.91
com.apple.iokit.IOATABlockStorage     2.0.6
com.apple.driver.AppleUSBHub     3.4.9
com.apple.iokit.IOUSBUserClient     3.5.2
com.apple.driver.ApplePMU     2.5.6d2
com.apple.iokit.IOATAPIProtocolTransport     1.5.3
com.apple.driver.AppleK2SATA     1.0.4f2
com.apple.driver.AppleGPIO     1.3.0d0
com.apple.driver.AppleVIA     1.5.1d1
com.apple.driver.MacIOGPIO     1.3.0d0
com.apple.driver.AppleCPUThermo     2.0.0a0
com.apple.driver.AppleMPIC     1.5.3
com.apple.driver.AppleI2C     4.0.0d2
com.apple.driver.AppleK2SATARoot     1.0.5b1
com.apple.iokit.AppleGMACEthernet     1.5.9f1
com.apple.driver.AppleFWOHCI     3.9.7
com.apple.driver.AppleKauaiATA     1.2.1f4
com.apple.driver.AppleUSBEHCI     3.4.6
com.apple.driver.AirPortBrcm43xx     365.91.19
com.apple.driver.AppleUSBOHCI     3.4.6
com.apple.driver.AppleK2     1.7.2f1
com.apple.driver.AppleSPU     2.5.6d2
com.apple.driver.AppleMacRiscPCI     3.4.0
com.apple.driver.AppleCore99NVRAM     1.1.1
com.apple.driver.AppleFlashNVRAM     1.0.5
com.apple.security.seatbelt     107.12
com.apple.nke.applicationfirewall     1.8.77
com.apple.security.TMSafetyNet     3
com.apple.BootCache     30.4
com.apple.driver.DiskImages     199
com.apple.driver.AppleMacRISC4PE     2.0.4d9
com.apple.driver.AppleUSBComposite     3.2.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice     2.1.1
com.apple.iokit.IOSCSIBlockCommandsDevice     2.1.1
com.apple.iokit.IOBDStorageFamily     1.5
com.apple.iokit.IODVDStorageFamily     1.5
com.apple.iokit.IOCDStorageFamily     1.5
com.apple.iokit.IOSCSIArchitectureModelFamily     2.1.1
com.apple.iokit.IOFireWireFamily     3.4.9
com.apple.iokit.IOATAFamily     2.0.1
com.apple.iokit.IO80211Family     216.1
com.apple.iokit.IONetworkingFamily     1.6.1
com.apple.iokit.IOUSBFamily     3.5.2
com.apple.iokit.IOKeyLargo     1.7.2f1
com.apple.iokit.IOHIDFamily     1.5.7
com.apple.iokit.IOStorageFamily     1.5.6
com.apple.driver.IOPlatformFunction     1.8.7d5
com.apple.iokit.IOPCIFamily     2.6
I downloaded istat pro and installed it. Temperature is fine (51 top in both processors) rpm is right in all the fans BUT the drive bay rpm fan is constant: 1000 rpm without any variation
After 15 minutes, it freezes. No response. I only plugged the monitor and the keyboard and mouse (with cords. I stopped using the magic mouse since the problem appeared and the computer does not have Bluetooth included, I use an USB dongle that now is unplugged)
That's all the news for now

5770 and 5870 in Mac Pro 2009 - noisy PCIe expansion bay fan

I replaced the Geforce GT120 by the ATI radeon 5770 in my Mac Pro Quad 2.66 Nehalem. I had severe trouble with the speed of the fan of the PCI-e expansion bay: 2000 RPM and really noisy. After 30-60 minutes it slowed down and became silent, but upon reboot the noise and the high speed were there again.
I have sent the 5770 back to Apple. I am considering to try the 5870, but I am afraid I will be in trouble again.
With the GT 120, the fan speed is only 800 RPM and the Mac is silent. The ATI Radeon cards require one or two power cables connecting to the logic board.
Could that be the cause of the problems or was the 5770 a bad card? Or is it the logic board. I ran the Apple Hardware Test. everything was OK.
I checked it with Techtool Pro and there were no problems found.
Any help would be much appreciated. I have zapped the PRAM and reset the SMC without result.
Kind regards and thanks of reading.

If it is any consolation I have the same machine and installed the Radeon 5770 and have intermittent high expansion bay fan speeds (1400-2400rpm). I just checked this board today because it seems more noisy today than in a while and the ambient air is listed as 78 degrees F. The card has it's own fan and exhaust slots in the back of the card and the air from them is warm but not what I would consider hot. I had had two video cards and a eSATA card installed and never had a problem. Now with just this card and the eSATA it exists. I'm betting if I call Apple about it they will tell me it's only listed on their site as compatible with the 2010 Mac Pros, so, for now I will live with it.

CPU heats up on file copy/backup and fan speed does not increase

Hi Friends,
I have been having issues with fan in my Dell Studio 1555. It has an ATI Radeon card and I had installed the proprietary catalyst driver as the open source driver is too noisy.
Recently, I noticed that on accessing my hard disk and copy files or running backup (luckybackup), the temperature shoots up from around 60 deg C (just using chrome) to 100 deg C when it would shut down itself. However, it seems like the fan speed does not increase with the increase in temperature to help it cool down.
I tried to get the fan speed details with "lm-sensors" but it would not show the fan speed. Here is the output of sensors:
[user@domain]$ sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +60.0°C (crit = +100.0°C)
temp2: +59.0°C (crit = +100.0°C)
temp3: +66.0°C (crit = +100.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +58.0°C (high = +105.0°C, crit = +105.0°C)
Core 1: +58.0°C (high = +105.0°C, crit = +105.0°C)
Following the Arch wiki, I added acpi_enforce_resources=lax to kernel parameters but it did not help as well.
Here is the main problem:
1. CPU temperature shoots on accessing hard drive but fan speed does not increase - Any guide/direction to investigate would be really helpful.
2. Sensors does not show the fan speed. Read about i8kutils, but couldn't figure out how to get it working with systemd. Any indicators here?
Last edited by ravisghosh (2013-07-01 05:22:01)

luuuciano wrote:Ravi, did you solved it?
Im having similar issue on a vostro 1710, fan never works... :-/
The fan was bad. I had to replace the fan. However, I have not been able to figure out how to see fan speed in sensors.
Last edited by ravisghosh (2013-09-08 15:57:37)

Fan Speeds, and Mirror Raid with New Internal Hard Drive

Regards,
I recently installed and formatted a new hard drive in my PowerMac dual 2.3 ghz computer and I have a few questions.
1. Now that there are two hard drives do I need to do anything to ensure that the fan on my computer can keep them cool? I think the fans I have in the hard drive bay is enough, but I do not know if they will automatically set themselves to run properly. I can monitor the fan speeds and temp from iStat pro, but do not remember what level the temperature was before installing the new one.
2. Given that my new drive is a SeaDisc hard drive and the older one is a Western Digital, will this cause any problems in creating a mirrored RAID. I believe that both are 7200rpm drives, and my second hard drive is a little larger (I will just have unused space after making the RAID). I am concerned with the fact that these two drives are from two different manufactures. Will this cause problems or drastically slow down the reading and writing of data? Has anyone else experienced problems in making a mirrored RAID from two hard drives that are not exact matches, and even come from different manufacturers?
Any advice will help.
Thanks
earpshmael

Hi earpshmael;
Generally when creating RAID arrays the more similar the drive the less problems you tend to have.
The real question is exactly why do you want or need RAID?
I think so many people seem to think that RAID will solve all of their problem. I hate to tell you the bad news but it will not.
Generally there are to varieties of RAID available using the software RAID built into OS X which are 0 and 1. RAID 0 or stripling is generally for moving large file rapidly for applications like HD video. It usually doesn't help the OS. RAID 1 or mirroring is for protection from drive failure. It is not a valid backup solution.
Allan

Lacie 500GB External Hard Drive Fan speed / heat issues?

I have a 500gb Lacie Mini hard drive with the 1394/usb2.0 hub and for some reason when it is connected to my mac mini in the office, it works totally fine, doesnt spin really fast or anything. When I take it home and hook it up to my other mac mini, after 10-15 minutes the fan starts to blow at full speed on the Lacie. The mac mini at home is from March 2005 and its a 1.66 Core Duo, and the one at the office is from March 2007, and is also a 1.66 Core Duo, both with 2gb of ram.
I have noted at the bottom of my home mac mini is very warm to the touch after feeling between the drive and the computer, but it seems odd to me that both computers dont get just as hot considering they are virtually identical aside from the build date. Has anyone else experienced this problem with their Lacie mini drive? The fan spins so high on the drive that its annoying to even use it, and I'd like to take care of it if theres a remedy.
Thanks!

I agree, the link you posted is strangely inaccurate. I have been trying to post the attempts on this link: http://www.123macmini.com/forums/viewtopic.php?p=109630#109630 but as you can tell I have been frustrated with the whole process. The posts may be confusing because they are step by step. The lacie drive is loud under the mini but not when it is by itself.
As of now the test seem to be inconclusive. It is so strange that I would be convinced if someone told me the fan in the lacie has a temperature sensor inside. But the only thing I can come up with is that the mini gets hot on the bottom, while the lacie gets hot on top. Their combined heat seems to be too much for the lacie's fan to cool. I will also mention that I have fan control software installed on the mini, but this doesn't seem to have any effect as I am not changing the settings during my tests.
The fan having a temperature sensor is just crazy... I removed the fan from the lacie (fan still plugged in) and set up the stack. The lacie bottom was removed for this test. The lacie fan never turned on, and the drive increased in temperature that I felt was too hot. This is where sensing strips would assist in further data.
So here is my next step: Since the fan didn't turn on when the lacie bottom was removed, it seems that the open back and open bottom (the back and bottom is one piece) was enough to keep the sensor from turning on the fan. But as said before, I felt the drive was still too hot. So maybe the lacie case needs more ventilation. Two ways I have thought to do this:
----- cut the fan one large hole instead of a bunch of little ones, allowing more air out.
- or -
----- cut the bottom vents out (maybe not all of them) to allow more air intake.
I think the first one would solve the problem, but I don't currently have the time to do it. I am going to cut the fan hole first, once I get the time.
I will tell you that the lacie drive is mounted closest to the top of the case. I have thought of purchasing some thermal sensing strips to determine what is hot and when; haven't yet.
AndyO, you said everything right except one part... the mini's air-intake is the vents on the bottom, and the air is obviously pushed out the back by the horizontal fan (there is a special plastic mold that the fan sits horizontally in). Which you would lead us to believe that the mini would heat up with the lacie underneath, but I haven't noticed any drastic changes in the mini fan speed or temperature. Instead the lacie drive gets hot or at least the fan goes crazy.
Hope this helps, I'll let you know when I get the scalpel (really sharp knife) out.
-p13th0r4

I want to replace the drive bays, quesiton about the connected fans...

Curious to know if the bios will report any faults if I replace either of the 5.25 drive bays, losing the connected fans? I dont need the ODD, and am thinking of fitting 2x 5.25 drive bay caddies in the top 2 bays. If so, can these be disabled in the bios, or will the system halt during post awaiting a keyboard input?

Hello,
I'm assuming you're talking about the TS140? The maximum supported drives on this system is 4. The cooling is the main reason for this. Lenovo does sell an adapter that has a small fan on the back of it to increase airflow inside the system. 5 drives were never validated on this system and if it were, I'm not sure how it would affect the temperature inside the chassis. It may work, but I would be concerned about the airflow / temperature inside the chassis with adding drives without an additional fan.

High fan speed (but not 100%) following hard drive upgrade

Hi,
I recently upgraded the hard drive on my 2007 Mac Mini to a 320Gb Western Digital Scorpio Black. Since then, the computer's fan has been very annoying. The fan is not running at 100% all the time, but it ramps up very quickly when the computer is under the lightest of loads. Simply scrolling a webpage will send the fan speed up to around 4500 - 5000 rpm.
My first instinct was that the 7200 rpm drive was creating too much heat, but the temperatures are all fine with the hard drive around 30 - 35 degrees C and the CPU around 35 - 40 degrees C, at a fan speed of 1500 rpm. The temperatures drop down to the 20s when the fan ramps up.
The problem is as described in this article: http://support.apple.com/kb/HT3964
"The computer's fans run at high speed although the computer is not experiencing heavy usage and is properly ventilated."
I've followed the reset SMC procedure several times and yet the problem persists. Can anyone help me to solve this problem? Given the low hard drive temperatures and the fact that the fan is spinning up without disk activity, I'm hoping the drive isn't to blame. I'm getting fairly experienced at working inside the mini, having done three memory upgrades and two hard drive changes, but I would still like to avoid opening it and changing the disk again.
Thanks,
David.

Same thing happened to me. Upgraded HD and RAM, fan spins up at a mere scroll of a web page.
I checked the usual suspects -- vents, foam "T", physical placement, cables back in place.
Also, I went back to the original equipment and found it still "wound up" quickly.
Another data point -- when the fan is accelerating and when at speed, the air coming out of the vents is not very warm. Windows laptops I use discharge very warm air when the fans spin up. Could the calibration of the CPU temp guage be off?

2011 i7 iMac optical drive fan speed

Can aynone confirm whether the deafult speed for the optical diive fan on 2011 i7 iMacs is 1150 RPM, i.e. 150 RPM faster than the 1000 RPM for 2009 / 2010 iMacs?

It is normal for the fans to run, they're there to cool down your machine by >>passing air over parts that heat up, they should be extremely quiet so you >>cannot hear them unless you have extremely sensitive hearing. 3500 RPM is >>extremely fast though so it indicates something else might be going on.
I am noticing the optical fan running quite high. And this is with normal usage. Web surfing, file manager lookups, nothing much else. However, I notice the optical fan speed climbing and getting louder. It will get up to approx. 5000rpms. This i can confirm because I am running hardware monitor and this is what is is showing.
So my question is this. Are the iMacs supposed to be relatively quiet for normal processing? When I say quiet, quiet so that you cannot hear the fans? I can understand a graphics intensive/watching movie causing them to get louder but other than that should they not be relatively noiseless?
Maybe some of you techies out there can reply with telling me what an iMac should be running at. (wrt fan speeds/temps). I would like to know how far off the norm my iMac is.
Thanks again and I look forward to your replies.
....Bruce
Message was edited by: BGmail

Fan speed problem Power Mac G5 Dual 1.8 GHz PowerPC - please help

Please HELP, I have a fan speed problem with my Power Mac G5 Dual 1.8 GHz PowerPC
This is a NOT an Intel machine. I am running Mac OS X v10.5.8
Power Mac G5 - PowerMac 7,2 - Power PC 970 (2.2) - 1.8 GHz with 2 CPUs - L2 Cache (per CPU) 512 KB - Memory 8 GB - Bus Speed 900 MHz - Boot ROM version 5.1.5b1
I have included below Links to download a sound file (.m4a) that I recorded of the fan speed problem and both a .pdf and .spx files of my system profile.
download sound file
http://homepage.mac.com/rep3/filechute/myG5dualsFans.m4a
down load .spx file of my system preferences
http://homepage.mac.com/rep3/filechute/systemProfileREP3-G5dual.spx
down load .pdf file of my system preferences
http://homepage.mac.com/rep3/filechute/systemProfileREP3-G5dual.pdf
When did the fan problem start?
After I replaced the mother board on the computer.
Why did I replace the mother board?
Because the experts at apple agreed with my diagnosis that the major crash problems & kernel panics must have some thing to do with a logic board gone bad. They would not work on it, because this Power Mac G5 dual 1.8 GHz machine is now a legacy model.
What I have done to attempt to fix my fan speed problem? yes I checked the obvious things, here is a list:
1) yes I checked to be sure that the new mother board was the same part number as the original one, and that all things that were unplugged from the old mother board - were actually plugged into the new mother board.
2) all the fans work, I can see them spinning if I use a flashlight and look at them (cover on and off to get at some of them)
3) check all RAM to make sure: a) it was installed properly b) that the RAM worked using TechTool Pro c) even started the machine with only the original RAM that came with it.
4) I installed a Temperature monitor - to see if there was something reading as very hot inside that was causing the machine to continually run the fans at a high speed. No, no heat issues that I can see. Here are the reading from the sensors in degrees fahrenheit, 2009-10-11 16:11:01 -0500
CPU A Die Temperature: 75.7℉
CPU B Die Temperature: 81.5℉
Drive Bay: 68.9℉
Main Logic Board Air Inlet: 64.8℉
Main Logic Board Ambient: 73.6℉
Main Logic Board Backside: 76.3℉
Memory Controller Heatsink: 93.2℉
Processor Card A Ambient: 77.5℉
Processor Card B Ambient: 77.0℉
5) zapped the PRAM
6) followed the SMU reset instructions for
Power Mac G5 (Late 2004)
To reset the SMU on a Power Mac G5 (Late 2004) computer, simply do the following:
• Turn off the computer by selecting Shut Down from the Apple menu or by holding the power button until the computer turns off.
• Remove the power cord from the computer.
• Wait two minutes.
• Plug in the power cord.
• Turn on the computer.
7) followed the SMU reset instructions:
Resetting the Cuda/PMU
How to reset the PMU:
• If the computer is on, turn it off.
• Disconnect ALL cables from the computer, including peripherals and power.
• If possible, move the computer to a place where you are not standing on carpet.
• Open the case and ground yourself by touching part of the metal frame inside the computer.
• Find the Cuda or PMU button
• Press the Cuda or PMU button ONCE. Do not press the button more than once before starting the computer up again.
• Wait 10 seconds, then reconnect the cables you removed in step 2 and turn the computer on.
• If the computer still does not respond after resetting the PMU, the computer may require service from an Apple Authorized Service Provider.
8) ran disk utilities, repaired permissions
9) found a setting in the system preferences that a chat room person suggested had something to do with fan speed. In Energy Saver, under options, processor performance was set to highest, I set it to automatic - this did not change anything that I could tell - BTW I checked my other G5 (a single processor that works fine) that is the setting that that it is set to, and it is nice and quiet.
10) restarted the machine, ..
11) found a Fan Control System Update - but it did not install when I tryed to install it -
12) booted from OSX install disk and ran that disk utility
13) used OnyX to fix disk permissions, clear caches and temp items
Nope - still have the same high speed fan problem. ... PLEASE HELP!!
I have been reading in the MacInTouch reader reports - found this: some one said to use this - thermal re-calibration using the Apple Authorized Service Providers' disk - but that's not available, at least I can not find it - anyone? have an answer to finding this - or can do it for me? I am in Chicago.

The Genius at the downtown apple store said that because it's a "legacy machine" they would not work on it, .. so should I push them?
Well, I personally think that's ridiculous, I'd Push them, I'd call AppleCare & talk up the chain if need be... there the ones that have or should have that Disc... man o man... Personally I'll never visit an Apple Store again in my lifetime, maybe try an independent AASP if none of that helps!..
http://tinyurl.com/ykomqkn
Man-o-man, pop my cork before I explode on that one, if I had anything to do with it I'd close that store.

Drive bay fan speed

Similar Messages

Maybe you are looking for