Dual CPU fans in IQ816 Question

I have received the fatal error message indicating that my wife's IQ816 CPU fan is dead.
When I opened up the unit I found that one of the 2 CPU fans was indeed not functioning (FYI there are a total of 3 fans in the IQ816s). The fans part number (on the part) is 13G075205000H2 which translates to HP part number 489487-001, and I have ordered a couple of these already.
However, the second CPU fan (located right next to the other one) has part number 13G075205030H2 and I have not been able to find this part number anywhere (it is the same as the first part number with one of the 0s changed to a 3 so it is possible that the same part number may be okay with both, but I have no way of knowing that).
Could someone please let me know what the HP part number is for the 13G075205030H2 as I know this fan will die eventually, and I would like to be prepared with the replacement part in hand.
Thanks in advance,
Don McFarland

For those who may read this thread who are not familiar with PC hardware issues, there are some basic parts which can go bad and cause a machine to no longer function. Historically, manufacturers produce these parts so that customers who need them can keep their machine up and running rather than having to buy a new one. These parts include...
(1) CPU - okay, chances are good that the CPU manufacturer will take care of this being available
(2) CPU Fan - on newer machines, the BIOS will not allow the machine to boot if a CPU fan is not working - whether or not these are available is largely up to the part that was selected by HP - there is no guaruntee that the part will be available unless HP makes that happen.
(3) Memory - okay, chances are good that a memory manufacturer will take care of this being available
(4) Hard Drive - there are plenty of hard drives out there to choose from
Note that of these 4 items, HP is off the hook on 3 of them due to the stock that other vendors maintain, namely the CPU, Memory and Hard drive. The least expensive (by a longshot) critical part is the CPU Fan/heat-sink (production cost is a few dollars). One has to ask oneself, why HP would not make these parts available, because without them, a $2000+ computer (IQ-816 for example when they first came out) becomes a worthless piece of &^%^.
I am really having a hard time believing this sad state of affairs. For anyone reading this, make note that it does not matter how much you paid for your high end HP computer when it comes time for replacement parts, because HP is not taking the responsibility that they should to look after their customers - it may run for a couple of years or so, but when the trouble hits, you may find yourself in the same situation that I am in (i.e. can't get a part that is necessary for the computer to run).

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Any advice or comments would be much appreciated! I am a compulsive worrier regarding my PC.
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1. post your PSU brand and amps
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CPU Fan Question

I have been experiencing "freeze up's" lately and I did some research here to troubleshoot the problem. I performed a thorough dusting and cleaning of the interior and the problem seemed to go away. Needless to say, after 3-4 days of problem-free operation, the "freeze-up" problem returned.
I have discovered that the CPU fan is not operating. Presently I'm using the G4 with the door open and a desk fan directed at the CPU heatsink. Operation appears to be back to normal.
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My model spec's are below.

Hello Carpetbagger,
I thought my QS 2002 800 MHz (with a dual 1 GHz cpu) was running a bit hot, so I went looking for fans that moved a bit more air. Evercool makes one, but I finally settled on a Sunon PMD series - PMD1206PTB1-A - which cools the beastie right down. (It also sounds like a leaf blower) Price was less than $10, less than $15 with shipping, although I may have had to buy two (just an excuse to buy another Mac). There are several other PMD Sunon fans that would seem to fill the bill even better - increased air flow, but fewer RPMs and less noise - but they were available in quantities of 100 units (@$6 ea).
The KDE 1206 Sunon fan is one of several fitted as standard, and should work as well as it did when the QS was new. It, too, should be available at under $10.
It's a fairly common fan size - 60mm x 25mm - and has many applications, so if you search Google for fans and distributors you should find out more about availability than you ever wanted to know.
http://www.PCtoys.com/ is a source for both the KDE Sunon and Evercool.
Remember, a cool Mac is a happy Mac!
Jon

Sorry, another CPU fan speed question.

Hi,
Just got a new 2011 iMac 2.5 GHz Intel Core i5 21 inch. First mac and loving it so far! I can hear the fans just slightly at idle in a quiet room and checked on this forum to see what is the normal idle fan speed.
Most of the results come back with the CPU fan running at around 938 rpm. mine is constant at 1199 rpm. A few others have this speed too, but he majority are around the 938 rpm level (some much higher). My temps also seem lower than most at idle too (due to the higher fan speed i guess).
OP Drive 998
HD Drive 1099
CPU 1199
My question/s:
Why the difference between machine (shouldn't they be set the same in all machines with the same spec with software)?
And is the normal??
Thx

Also, would I notice it being quieter with it at 938 compared to 1199?

Quicksilver cpu fan replacement question

Hi,
I have 2001 quicksilver 867. The cpu fan had stopped moving. I got it going again by taking it out and moving the fins around, but i'm looking for a replacement.
I found the "OEM" versions but the idea of spending $60 for a fan isn't that appealing.
So i'm considering just getting a standard 3 pin fan, and using an adapter to make it 2 pins.
I was thinking of getting this fan:
http://www.performance-pcs.com/catalog/index.php?mainpage=product_info&cPath=51&productsid=133
and I noticed they have several "2 pin" fan adapters here:
http://www.performance-pcs.com/catalog/index.php?cPath=289&main_page=index
So my questions are:
(1) Will that fan above work well enough for the quicksilver cpu?
(2) Do you know which 2 pin adapter would fit the logic board, as they have several types. Type A would be my guess but it's hard to tell from the small pictures.
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I would remove the fan and take it to a local PC store. You should be able to find a reasonably priced replacement at most PC parts retailers.

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Project "Bad Wolf"
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However the R4's are 3 pin, not 4 pin so they don't have PWM control. Is there a way to set up the H97 PC Mate to control a 3 pin fan in it's 4 pin cpu header?
I talk to MSI over the phone the guy said that it should be able to control the 3 pin fan through the cpu header via controlling the voltage. He said to look it up online to see if I could find how to do it, and to download the user manual and look through it, but I couldn't find anything on how to set up the BIOS to do that.
If I can't I'm not even going to bother to buy a third fan.
Ty KB_TheDireWolf

Hi
CPU fan headers are only able to control PWM fans(4 pins). If you lut 3 pin fan into it, it will run 100% possible speed.
SysFan headers can control 3 pinned fans by voltage increase/decrease, between 50-100%. And PWM fans of course too will work.
Maybe a fan splitter, or an actual fan controller would do? I have a controller myself for all 6 fans

CPU fan recommendations for dual 800 Quicksilver

It never rains but it pours.
Just a few hours after posting about HD heat issues my CPU fan has gotten really noisy with a slight rattling noise. Yes, it is the CPU fan. Maybe it's the hot weather we are having causing something to expand, or maybe the cleaning I gave it yesterday with compressed air pushed it over the edge. Anyway, I removed the fan, lubricated it with one drop 3M oil under the sticker, replaced it. All dust and dirt is off the blades. I have poked and prodded it to see if there were other items vibrating (e.g., the famous screws touching something), but nothing changes. The sporadic rattling (sometimes disappears for half a minute or so but usually there) really suggests to me that a bearing might be going. At this stage I think it is time to go shopping for a new fan.
This is a dual processor machine of the early QS series so it's like a toaster inside and I'm not sure if any of the standard QS fan recommendations apply to a dual. Of course I want everything - high CFM and silence. I found a lengthy discussion from last December talking about a single processor replacement but I thought I'd solicit current recommendations, especially for dual processor.
Thanks

The specs aren't too hard to find; I just searched: " Sunon PMD1206PTB1". Google brought me to a Sunon site.
http://www.tmcscsi.com/Sunon.shtml
the above link doesn't seem to work as a link, but when I type it into my address bar, it works fine. Go figure!
which tells all. The KDE1206PTV1 fan is a different series and rated at 23.5cfm and 33.5 dBA, which I think we knew; it also runs somewhat slower and draws about half the current. More importantly, there are probably half a dozen 60X60X25mm fans of either the PMD or KDE series that would fit, and would push more or less air at more or less noise. What it doesn't tell is what your ear would call an acceptable compromise. In general, of course, more cfm, more dBA. It also doesn't tell how these stats compare to other brands; I ran it all down at one time, and it's a rather laborious process, but it can be done. I didn't have any frame of reference, so it was all just numbers to me; I set the whole matter aside until just now with your inquiry.
I wouldn't worry about the connectors too much; I fit QS fans to the DA model and wind up connecting them with Molex plugs and no problems. The replaced SilenX fan had three wires, of which only two were used, and it worked. Most PCs use a third wire to turn the fan off or on, or up and down, or something - which Apple doesn't. N.B. If you use the Molex connector, you will note that the red (5v) wire plugs into the yellow (12v) socket; not to worry - it spozed to. The PMD fan I got came with two wires, bared at the ends, but no connector(s). I wound up jury-rigging the connexion. PC accessory houses that sell fans also sell wire adapters of dozens of configurations, just search. My two favourite such houses are Xoxide.com and pcToys.com. I think I got the Sunon fan(s) from Allied Electric (alliedelec.com) for about $12 and $12 s&h, which is a minimum figure. You can ship multiple fans for that.
Sunon says its fans work on the Mag-Lev principle, so lubrication wouldn't help much. What would hurt would be an unbalanced fan, so it might help to clean the crud off the blades - evenly, if possible.
I keep wondering what a slot fan would do to cooling and noise, but that may be a thought better postponed. First should be getting the CPU acceptably cool. I also understand it helps cooling if you clip some of the grillwork in front of or behind the fans (power supply fans, especially).
Just a few thoughts ..... Jon

PMG5 Dual 2.0 CPU Fans Running at (very) different speeds

I purchased a refurbished PowerMac G5 Dual 2.0 from Apple 8-10 months ago and I always thought the fans ran louder than I expected. Recently, I opened the case and noticed that the bottom front CPU fan was running much slower than the top CPU fan (with the clear shield in place). I checked this with software and here is what I found...
CPUA ~ 300 rpm on average
CPUB ~ 3150 rpm on average
CPUA Temp ~ Amb 46C
CPUB Temp ~ Amb 37C
Nothing changed when switching from Highest Performance to Automatic. Is there a sensor that needs fixing/cleaning or should I take it in for service?
Thank you for your help!
-Will
PowerMac G5 Dual 2.0 - GeForce FX 5200 Model Mac OS X (10.4.7)

Yes take it in, this is a considerable difference.
There is only a few hundred (at most) RPM difference between my CPU A and B intake fans.
Either you got a dead processor or your fans need to be recalibrated or your firmware isn't right.
All three cases is a good reason to have Apple look at it.
It might be the software your using to read the fan speeds, download Hardware Monitor, it seems to be the most accurate and up to date.
I'm sure you have stressed the processors and checked in Activity monitor to see if both your CPU's are alive and kicking.

Crazy cpu fan question

My CPU fan seems to be running clockwise effectivly pushing air down towards the processor. Shouldn't it be running counter clockwise to pull the air off of the processor and heat sink?

No, the fan take cool air from your case and push it down unto the Heatsink Fins and that cools them off. that’s why it is important to have a good air flow though out your case.

CPU Fan Speed and Memory Questions

I"ve noticed recently that my fans sound a little different. When using aperture and sliding some of the image adjustment controls the fan will increase as I'm sliding the controls and stop when I stop.
I've been monitoring with istat pro, and my CPU fan is almost always at 0, I've seen it not at 0 a few times but very rarely.
Readings:
Power Supply: 599
Exhaust: 655
CPU Fan: 0
HD/Expansion: 499
Temperatures seem normal except northbridge has always run a little hot since I got the machine. About 180F
I did the hardware test and the message I got was:
4MOT/1/4000002:CPU_MEM
I'm assuming this means that one of my memory chips is bad but where do I go to find out what this code means? And does this mean there is no problem with my CPU fan or did the test just end when it found this error?

Good news about the RAM. Have you checked to see if the fan is gunked up with dust and dirt or some other obstruction? Could free it up or be the source of a fan failure.
A simple procedure is to reset the SMC (System Management controller). Here are Apple's instructions:
http://support.apple.com/kb/HT3964
The SMC has control over the fans. The reset won't do any harm but follow the instructions.

Dc5850 cpu fan speeds to top speed sys then shutdown

I have a Hewlett-Packard HP Compaq dc5850 Micro tower PC, now running windows 7 pro 64-bit. That was new in late 2008. Originally it came with vista 32-bit downgrade able to XP pro 32 bit, running on 2G RAM, and 160G C drive with a 2.30 gigahertz AMD Phenom 8600B Triple-Core processor. It also has ATI 3100 integrated graphics as well as integrated NIC at 1G and integrated High def audio. In the first few months I had the system, I upgraded memory by 4G and total Disc space by 500G by adding a D drive; then upgraded to windows 7 pro 64-bit.
Overall, I have had a good experience with the PC but it has had problems while in its 3-year warranty. I did need to replace the C drive and later it original RAM devices. Yes HP did these replacements and swaps, under warranty; that meant I had 6G memory for a long time before the HP 2Gig failed out of warranty, leaving me with 4Gig now. Yes I have always had the Unit on an UPS; I even replaced the old UPS with a more powerful unit in late 2009 or early 2010 when the old UPS showed signs of failure. Now instead of serial based UPS connection it is USB.
Over the last few months I have been getting blue-screen errors of all sorts. Ranging from video related errors, Memory faults, Disc read/write failures and processor flag errors too. After numerous repair disc runs or re-install of windows, the disc read write errors wore corrected by the HP drive sanitation utility disc repair/wipe after failing the extended test. The non video ram was tested by a bootable CD of memtest86 v4 running extended test as well as MS memory Diagnostic. Both run multiple times, both passed multiple times. I was able to find a CD based video diagnostic for ATI and the Video passed repeated stress test as well. Over Labor Day I conducted these test and re-installed windows 64-bit; on the following Monday windows informed me I needed to activate windows, so I verified the correct key and called to do so, successfully.
With that background given here is the question. Recently over the last two or three months, for no apparent reason, mainly on boot the fan races to top speed and the system shuts down to protect itself. I researched this a little and found one cause to be inadequate airflow over the CPU to keep it cool; the recommendation made sense to vacuum with a computer vacuum and be sure airflow is not somehow obstructed. I am now thinking all these problems are related to the CPU temp sensor. Is it on the CPU fan or the motherboard, and can raising the fan speed in BIOS help prevent the problem, particularly if it on the motherboard.
John M Gray II

My pentium 4 3.0c stock Intel fan is 4.44 watts. Isn't the mobo designed for this?
Also, can the sys fan header have the speed sensor activated by a bios fix or is it a hardware issue where it just does not exist? If hardware, seems strange since Corecell shows sys fan.
Regards

Lenovo G560 CPU FAN stop then overheating

Hello i have lenovo G560 after i turn it on a few seconds fan working then definitiveli stops and cpu go overheating and notebook go stutdown. I try to change CPU fan but issue is there still. Sorry for my poor english. Can anybody tell my what i want to do?

hi deadbiker,
Overheating problems are commonly caused by evaporated or dried out thermal paste or dirty cooling fan. Since you replaced the fan, I recommend you remove the heatsink and re-apply a thermal compound on the CPU and GPU (if applicable). See page 41 on the Hardware Maintenance Manual on how to remove the heatsink.
If the fan still stops and the unit overheats and shuts down, the CPU might be throttling or might be faulty already. I recommend you send the unit for service (either a local repair shop or thru lenovo since they have diagnostic tools to check the unit out). Support phone list here.
Hope this helps.
Cheers
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[Solved] Asus L1366 mobo, cpu fan speed control

Hi, everyone,
I finally have this new core i7 system, to replace my old AMD athlonx2. I have one question about the CPU fan speed control.
I remember that in my old system, the cpu fan speed control works out of box, no configuration is needed.
But when I install arch 64 on this new i7 system, the cpu fan is running at its maximum speed constantly while the CPU temperature is modestly low. I know there is a wiki teaching how to do it.
However, I am just curious why it doens't work out of box any more? Does CPU fan control work for you guys out of box normally? especially the new Core i7 cpu users?
Please let me know, really appreciated it.
Thanks a lot.
Update: the issue is solved, see my last post, the solution is blacklisting: asus_atk0110, instead use w83667hg.
Cheers.
Last edited by mark.altern (2009-10-01 08:18:18)

First off, it would be useful to know what the sensors-detect script actually reports.
Okay. How fan control works on Linux: First, navigate to /sys/class/hwmon
Each of these folders, i.e. hwmon0, stands for a sensors monitor / fan controller on your mainboard that may control one or several fans. Inside hwmonN, there should be a subfolder called device, which contains several interfaces if your BIOS allows software-side fan control. You can read them with cat and write to them with echo.
Examples:
pwm1_enable shows if OS-level fan control is enabled (1) or disabled and in BIOS control (0). Changing fan speed won't work if this is disabled. (i.e. cat /sys/class/hwmon0/device/pwm1_enable reports 0 -> disabled; you could enable it with echo 1 > /sys/class/hwmon0/device/pwm1_enable).
pwm1 allows to change fan speed. The values range from 0 (fan off) to 255 (full speed, 12V).
fan1_input shows the current RPM if a fan is connected. You can only read from this interface. Its useful to check all of these in the each of the hwmon folders to find out if there is actually a fan connected to the fan controller (they often have more ports than mainboard manufacturers use).
There might be a fan1_div, this is somehow related to how the kernel reads the RPM, I don't know how it works.
temp1_input interfaces can appeare too, if some of the chips have temperature sensors located somewhere. I *think* lm_sensors places the core temperatures it reads from CPU (the coretemp-isa-000X thingies) in one of the hwmon-folders too.
There might be interfaces for different fans in the same hwmon folder, i.e. pwm2_enable, pwm2, fan2_input, etc., all interfaces with the same index belong to the same physical fan connector, and all in the same hwmonN are managed by the same IC on your mainboard.
Warning: These interfaces, if they work, control the fans directly without any kind of security measure. If you shut some essential fan down, it will stay off until you reboot your CPU shuts down.
(If you see something likein0_alarm, in0_input, in0_max, etc. it's a voltage monitoring chip.)
If one of those interfaces can do something, OS-level fan control does work, if none of those folders contain a working pwm interface, fan control seems to be unavailable.
Sometimes there is an option in the BIOS to enable it, and for some BIOSs software-side fan control only works if dynamic fan control is disabled in the BIOS and fan speed is set to a static value - or vice versa.
I don't know what you are using to control fan speed, there are many applications that use these interfaces, i.e. GNOME or KDE power managers, so I'm not sure what is happening:
IF: Windows 7 enables OS-level fan control and sets it the RPM to those you observed and you have nothing that provides fan control in Arch and so fan control stays at BIOS-level, which might also read out a different sensor / the same sensor differently or it might be more conservative in setting fan speeds altogether;
OR: You have something that provides fan control installed in Arch and it reads out a the wrong value supplied by lm_sensors and thus sets a higher fan speed.
Anyway, possible solutions I can think of:
Find out if you have some kind of fan control software and what it does. For example, I use the fancontrol daemon, I can't help you if you use something else.
The wiki mentions how to assign a fan speed to a certain temperature sensors. You might assign it to a different one. For example, there are no sensor chips on the mainboard of my EEE (no temp1 etc.) so I assigned the fan speed to the temperature reported by the BIOS via ACPI (those are in /sys/class/thermal, also no "device" subfolder on EEEs):
FCTEMPS=/sys/class/hwmon/hwmon0/pwm1=/sys/class/thermal/thermal_zone0/temp
You could also change the MINTEMP/MAXTEMP values to one higher than those you actually want to compensate for the effect of lm_sensors reporting temperatures that are too high.
It is currently not possible for a mortal user to change the coretemps lm_sensors reads, see this post, last paragraph.
There is a configuration file, /etc/sensors3.conf, you can change sensor names and adjust offsets here, but only for the monitoring chips and their sensors that are on the mainboard.
Last edited by Malstrond (2009-08-19 19:34:22)

CPU fan spins up for no reason and never spins down

I'm having problems with my new and otherwise immaculate iMac Intel 2.4 GHz. The CPU fan often spins up to 3500 rpm for no reason, even when left idle.
There are no processes running to justify the noise (no Spotlight indexing or anything) and the temperatures are as low as can be.
I have tried resetting PRAM and SMC many times to no avail.
Usually putting the Mac to sleep and waking it up slows the CPU fan down again, but it will go nuts at 3500 rpms sooner or later.
Once the fan has spun up to 3500 rpm it never spins down again unless the iMac is reset or put to sleep and woken up again. Even when hours of useless fan spinning has left it freezing cold.
SMCFancontrol won't help as it can't slow down fans only make them go faster.
Apple Support suggested I'd take it in for repairs but I'm reluctant as this smells like a Leopard/Boot Camp Issue from what I gathered on the boards. Also the repair service in Denmark is outsourced to third party repairers of questionable quality.
Any ideas?

I got my iMac back from repairs. They said they couldn't reproducere the error which might be as it at times appear very sporadic. The fans began to spin within the first day of use after I got it home though.
It seems that more and more users on the boards experience this problem. My theory now is that this must be a software issue as it usually begins once people update to Leopard 10.5.2.
The problem manifests itself like this:
The CPU-fan will start blowing at 3500 rpms for no reason (CPU-load and temperatures can be as low as can be.)
The CPU-fan will never slow down again by itself. Even after hours of unnecessesary spinning has left the Mac freezing cold.
Putting the iMac in sleep mode and waking it up again will temporarily slow down the CPU fan down to the usual 1200 rpms (usually for about 10 mins).
Resetting PRAM and/or NVRAM (SMC) will not help.
Installing SMCFancontrol will not help as it will only let you speed up the fans further - not slow them down.
So now I really hope Apple will address this problem with a new OS X release soon.
Still, if anyone manages to fix this problem with a hardware replacemnt please let us know.
Cheers, Jez

Cpu fan 90B alarm and plugged in but not chragiung alarm

hi,
I have HP notebook product: b6u29pa#acj and model: g6-2101TX.
I am getting following problem:
A. while start up pc i found alarm 930B cpu fan failure and then after restarting window7 start.
B. many time when i put laptop for changing it shown plugging but not charging and led near to charging port keep on biking white colour. that time charging not happen so if i removed charger and keep on using notebook my battery level is not getting down and suddenly at one point notebook power off. That means battery getting used but notebook not getting understand and giving me battery low alarm. Then i have to remove battery and insert it again. it will work for 2-3 days n then same problem repeat.
( pl note that note book battery is good and giving 2-3 hours backup when fully charge)
Both my problem was chronic so i took photograph when problem came and then given laptop for repair at service centre as it was under warranty.
Then next day i received call from service centre that my laptop ok pl come and collect. so i went to service centre when i checked found same problem so they took back and said motherboard is faulty.
for CPU 930B fan alarm they only clean fan may be alarm will come in few days.
after 8 days yesterday i received call again from service centre that my laptop is ok.
now my question is if my laptop is not ok then what to do? as my warranty was exp. on 23.08.2014 ( i need few days for trial ) may be after replacing motherboard any other problem appear. Will HP give few days for trials?
or any government intervention is required ?

Hello @yoursviru ,
Welcome to the HP Forums!
I understand you have issues with charging and a 90b fan error on startup.
To address your question about a trial period after repair: Typically the repairs should include a 90 day service warranty or the remainder of your existing warranty whichever is greater. This depends if the repair was done by HP or an authorized HP provider. HP Phone Support can confirm this for you.
If the repair was not done by HP or an HP service provider HP cannot guarantee the work of third party companies.
The power not charging the notebook could be an issue with the battery, internal power connector cable, power adapter, or motherboard. All of which are hardware related.
You can read about the fan error here and what to do to fix it: System Fan (90b) error message on startup.
To sum everything up. I suggest you get in touch with HP Phone Support as soon as possible as they are the ones who can give you a straight answer regarding service and warranty questions. My answers are based on personal experiences, as the forums do not offer service and are available regardless of the warranty status.
Hopefully Phone Support can give you the answers you're looking for.
Please click the "Kudos, Thumbs Up" at the bottom of this post if you want to say "Thanks" for helping!
Please click "Accept as Solution" if you feel my post solved your issue, it will help others find the solution.
The Great Deku Tree
I work on behalf of HP.

Dual CPU fans in IQ816 Question

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