CPU Fan Header died .. Options ?

My CPU voltage header died , after of the instalation of one low RPM fan Papst 8312L .
( In 5 minutes time it died... I had never use the this voltage header , as i have one external voltage regulator circuit) .
But i tried for first time to operate the internal software controled fan speed future , and the voltage header died .
One litle tranzistor named as 2323 (placed next to the voltage header) looks to be the problem .
It haves 12 volt in the one contact , and 0.2 at the other two contacts , is there any information about it ?
I am electronics engineer , is there any alternative tranzistor that i can install ,so to bring in life the header again .
Now i use power from the PSU headers .

The transistor would be fed PWM from the Winbond 83627HF, so DC voltage would be low on some meters. Have you tried a 'scope on it?
Here's a sample circuit from page 114 of the Winbond hardware guide:
I have no idea how MSI implemented the fan header, but the above diagram indicates that a 2N3906 PNP is used.
Hope you got SMD soldering tools!
Good luck!

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Z77 mpower cpu fan header "control" no longer working

CPU fan header now only works with 3 pin fans, 4 pin fans turn off when placed on header, do not turn on. I had been running a hub off of that port to a switch 8 port fan hub controlling all case fans and a pump. cable to header only had sensor and control, power was through molex, pump which was master only had same. I had hot swapping on, had added a HDD reported bad by raid in another tower in a hotswap drive tray (hot swap on in bios) was going to check it out in seatools. tower crashed on add. rebooted, when running seatools noticed temps way out of line 70-90c normal temps even under load 60c or less. noticed tower was quite, noticed no fans turning. booted to BIOS checked reported no RPM fans not spinning in health changed options, did not help thought hub may have died. powered down unplugged and plugged pump into cpu header. power back up fans running, but still high temps cpu header shows 0 rpm. shut down move pump to sysfan 1, reboot powers up pump on temps good. pump running at 100% speed had never seen it running like that on sysfan 1 even when told to. reboot try 4 pin fan in cpu tries to spin for jet a sec then nothing. reboot try 3 pin, fan powers up spins shows in pc health. reset to default, tried 4 pin no good, switched to older bios, rebooted no good, reset cmos no good…. any ideas forum wizards? I would really like to regain control so i can throttle fans/pump.
note bad HDD was pulled before swapping headers….
MB bios 17.6 & 17.12
win 7 ultimate
i3770k
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Quote from: hansrotec on 22-July-14, 17:49:22
1) I find it strange it does not effect the other 4 pin headers do they just not use the control line despite it being there?
2) i do find it odd that prior to this running the pump directly on sysfan2 i could never get it to go to 100% only 50%, since this happened it stays at 100% on sysfan2
1) CPU_Fan has its own circuit.
http://www.swiftech.com/8-WayPWMsplitter.aspx
We generally recommend to use the “CPU_Fan” connector of the motherboard,because most motherboard manufacturers usually allow a greater range of adjustments on this particular connector.
2) probably the Voltage Contol is damaged too (if they get the max voltage (12V), they stay at 100%).

Cpu fan header

Hi
I'm trying to find out the DC amperage rating for the cpu fan header on my mainboard, but MSI doesn't give any rating for the max allowable amperage.
I want to use it to power a Delta AFB-1212H-F00 120mm fan, which has a rating of 0.35A. Anyone have an idea if this would be safe to do?

During the hunt I found the biggest risk was that the "traces"/threading(?) wouldn't hold the power.
The biggest fan I've used on a MSI board is this one:
http://www.gtek.se/index.php?mode=item&id=2173&session=d007fd9bce0345eedf6a24a8401c1819
On the same, I've also - simultaneously - with a splitter used two of these, each 0,3A:
http://www.gtek.se/index.php?mode=item&id=2439&session=d007fd9bce0345eedf6a24a8401c1819

XPower CPU Fan Header Current Specs?

With any bit of luck, I'll be putting together another system using the XPower X58 mobo. One thing I'm curious about is the maximum current rating on the fan headers, specifically the CPU fan header. The reason I ask is I've got a Thermalright Venomous X in the one XPower system with 2 120mm fans in a push/pull config with both getting power from the CPU fan header via a 4 pin Y connector (only one RPM sensor connected). This system is working great and didn't even think about the current draw off the fans and what the CPU fan header maxes out at. This upcoming system will have the same push/pull config so to give me some piece of mind, anybody know what the maximum current draw is on the CPU header on the XPower X58?
Thanks!

Since this is a user to user forum (no paid or full time MSI employees here), it may be best to open a ticket with MSI Tech Support & ask the engineers direct. Doubt anybody here is going to have a clue as to the actual BB X fan header max current.
Added: Many of us use only the CPU 4 pin header, but for all the other fans, run off the PSU & use aftermarket fan controllers.

P35 Platinum CPU Fan on/off Option in bios?

hey all,,,
is there a way of turning off the monitoring of the cpu fan in a similar way to the NB or chiset fans so they dont report to windows... i have watercoolin and cant stand the bleepin i keep gettin dual core centre coz my cpu fan speed is at 0rpm.... if not then is there another app i can use to monitor temps that i can cinfigure to ignore the cpu fan on?
thanks

Nu773r, can you list your full system spec and any overclocking settings you have, and also the watercooling components you have installed?
water cooling may not be the best cooling option for today's motherboard, as there are other components on the board that run as hot as the CPU and not being cooled well.

MSI 785GTM-E45 BIOS CPU fan voltage control

Hello MSI gurus,
I've replaced the MB in an older HP media center with the MSI 785GTM-E45 running BIOS V8.8 out of the box.
CPU = Athlon 64 X2 4200+
My problem is the stock CPU fan has a 3 pin connection (voltage controlled) and is running at 100% speed all the time. From what I've read on the forums there are a number of people that have this issue (with other MBs with 4 pin cpu fan headers) and don't want to switch to a 4 pin CPU fan (PWM controlled). I am in the same situation.
I am hoping that there is a BIOS for this board that has an option to switch to or enable voltage control on the CPU fan header.
I have tried enabling the CPU smart fan target but no matter what settings I chose the fan remains at 100%. The H/W monitor of the MB indicates a CPU temperature (33C) well below the target (tried all options from 40C to 60C in 5C increments).
I have tried MSI's dual core center and it had no effect on the fan speed.
I have tried the 3rd party freeware SpeedFan and if had no effect on the fan speed.
I am not able to check if I have the latest BIOS or even find changelogs for existing BIOS verions because MSI seems to only direct BIOS downloads for this product to the Live update application. I have installed the live update program and it indicated V8.8 was the most recent veriosn of the BIOS for this board, although I have seen posts indicating the Live Update application is not to be trusted.
Dual core center, SpeedFan, and Live Update have all now been uninstalled.
I know the fan I'm using will change speed because I can connect a 3 pin fan controller and manually dial down the speed.
I know the BIOS can read the fan speed becase it correctly shows the RPM changes when I use the hardware fan controller.
Can anyone direct me to a BIOS version for this board (or some secret keystroke) that enables automated 3 pin voltage control on the CPU fan header?
Thanks in advance for your time.

For those who are interested I received the following answer from MSI technical support. Personally I find this to be a flaw in this board's design. I chose this MB to replace a dead MB in a HP media center for a friend. If I was buying this board for myself I likely would be using it as a HTPC because of the mATX form factor, HDMI on board, and backward compatibility for CPUs. However, due to the added cost of purchasing a new heat sink and fan I would be RMAing if I had bought it for myself. Considering many of the top performing after market coolers still come with a 3 pin fan it was a poor decision for MSI to not include support for automatic speed control of a 3 pin voltage controlled fan.
Quote
Dear Sir/Madam,
Thanks for contacting msi technical support team!
We are sorry that because of the circuit designs,we could not add cpu smart function for 3 pin's connector fan in the BIOS. The difference between 3pins and 4pins is that the second has a temperature controller but the first does not.We would suggest you utilize a 4-pin CPU Fan in order to control the CPU Fan speed.
Sorry for any inconvenience caused you!
Best regards,
MSI Technical Support Team

Z87-GD65 CPU Fan speed control not working

As per the title, the fan speeds set from either the BIOS (E7845IMS.1B0) itself or from within Command Center don't make any difference to the sped of the fans on the CPU cooler.
The cooler is a Noctua NH-D14 with stock fans (non PWM)
Can anyone help?
I'm not sure if I've missed a BIOS option anywhere!

Quote from: PCArcade on 25-September-14, 16:12:39
he cooler is a Noctua NH-D14 with stock fans (non PWM)
However, I removed the fans from the CPU headers and put them on system fan header, now the fan controls work - looks like the mobo is faulty :(
Not gonna RMA it though, it's pretty trivial
It's not faulty at all.
The CPU fan header is PWM only!
The obsolete Voltage Control method is not recommended for CPUs.
It's a recipe for failures.
All the modern motherboards require PWM control for the CPU fan.
So you should replace the CPU fan with a PWM one.

Max Amps for Mobo Fan Header?

What is the max amps a cpu/case fan can pull from a Motherboard fan connector? .5 amps? .8 amps? 1 amp? more? I have 5 fan connectors on my motherboard. Can they all pull 1 amp fans?
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Phenom II X6 1055t
850watt Pro Corsair
4 x 2GB 1600Mhz OCZ
Dual HD5830 1GB
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tho not same mobo...
i did try one of my 120mm 3500 rpm 1.67amps Delta fans on my main cpu fan header...
works solid. no lack of power. worked great with speed fan for noise control.
however, currently in different layout and i got a fan controller anyways cuz i need it for my
case fans.
also, at same time while using the 3500, was using 2x 3pins off the mobo at 0.16amps each
i'd say be safe and don't pull then more 1.0 amps as they all say... but
i saw at least one review on newegg where the guy uses it for his cpu fan main fan straight
off mobo 24/7 and im guessing he's not roasting - mine din't and i did touch the connector after immediately after
shutdown to see if it would be overly hot to the touch...
and it was warm... but not toasty.
i wasn't going to try to run two of the 3500rpm deltas tho... i do have splitters, and is
still tempting to date, but burnt plastic smell kinda hard to remove from room for longer period of time. hah.
so... if you wanted strong push-pull directly on the mobo cpu fan connector, can use 2x 2500rpm deltas fans (only 0.8amps each which
totals slightly less than one 3500 rpm fan)
but then again... you gotta check it for temp to be sure no toast for your mobo.
Nothing wrong with quick test... shouldn't hurt nothing... just dont touch the mobo while it's on.
If you have IR thermometer gun... best use... wish i had got one on sale other day for 18 bux shipped!
FANS ARE FUN!

MSI Z87-G45 Gaming Fan Header max Amp and total max amp

Hey guys,
I just bought this board (not yet arrived) and i am 1 fan slot short on the motherboard so i will be using a Y splitter. I will also use slip streams 1900 rpm (0.53A max), which i won't be using on max rpm.
After ALOT of reading i found many different max Amp values for many different boards. I also downloaded the manual for this specific board but the max Amp or Wattage is not in there, so i hope one of you knows.
If you combine two slip streams 1900rpm on max settings it will give 1.06A, and i was wondering if its safe to put this on one fan header (maybe the cpu fan header can handle more than the system fan headers). I have read that for some boards the max Amp per fan header is 1A which will be a little short for me and that the total Amp recommended for all fan headers combined is less than when you add them up yourself. My total Amp including the y splitter will be 3.18A
I hope i gave enough info for you guys and if not feel free to ask for more.
~Zwien

Quote from: PirateDog on 24-September-13, 01:36:31
1 amp comes to mind, but in all honesty, you might be better off running directly from the PSU power and/or using an aftermarket fan controller.
And is the 0.06 difference really going to have a negative effect on header / motherboard life time?

Fan Header for MSI P67A-GD53-B3 Motherboard LGA1155 Intel P67

Hello,
I have a MSI P67A-GD53-B3 Motherboard LGA1155 Intel P67 ATX RAID.
My CPU heatsink (Corsair H50 - requires pump control and fan control headers) fan has a four pin header (incl control). I cannot find on the board this 4 pin header for the CPU heatsink fan. Am I missing something?
Nevica

Have another look:
Point your eyes to the memory slots and look above the top slot on the right ("DDR3 Dual Channel Memory Optimizer Technology >[....]<-- CPU FAN HEADER.

Max CPU fan that can be installed

Newbie here......... Was wondering what the maximum power rating of the CPU Fan Header on the MSI Neo2 FIS2R is. Can I install a 90x90x25 fan rated at .32A on it.

Well I have my little Rule of, Anything over 1/4 Amp. is better off on it's own PSU Molex Dongle (As it should be a 4 Pin connection with 1/3 of an Amp and above). I have Heard that 1/3 of an Amp is The MAX for a Boards Fan Header, But Like I said, why Chance over 1/4 if you can use the PSU for Power, and Just splice into the Wire, and Use the RPM Monitoring Pin of the CPU's 3 pin Fan Header......And you Have to Look to make sure that is the MAX Amp Rating, Because these Fans Use More Power uppon initial Startup, then their Continiuos Amp Draw...But Again this is just my Opinion, and I am Far from knowing all that much...........Sean REILLY875

Fan header and fan control

i have the gaming 3 and i realized that the fan control wont let me go below 50% on case fans so i was wondering if i can Y cable my cooler master jetflo 120mms as at 50% they run at 1400 rpm which isnt even 50%. but if plugged in a cpu header i can reduce it to 600 rpm. (can system fans get this support)
but ive heard these fans are very power hungry so i was wondering what the max a cpu fan header can support

It shouldn't be a problem to use 2 fans on a single header. I use such a splitter and never had issues. Once I had 2 Delta fans (can't remember models etc) but according to the spec, even single of these on a fan header was already out of fan header's specification (Amps) But nothing broke, though I suggest to not use such powerful ones
Now the % stuff:
CPUFan headers can go down to 25% (or even 12.5%) IF the fans connected to such headers are 4 pinned (PWM). If they're 3 pin and connected to CPUFan header, they will run 100% without possibility to control it.
SystemFan headers are between 50% and 100% no matter if you use 3 or 4 pin fans. Though 3 pinned can be controlled compared to CPUFan header.

Smart CPU Fan Working?

I have Smart CPU Fan enabled in bios.
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Tolerance 5
default bios.. seems to be fine other than this one fairly minor issue.
Anyways, the Smart CPU Fan control seems to work only half the time. I'm using a Zalman CNPS7000CU heatsink w/o the fan controller. The fan is directly connected into the CPU fan header to the "left" of the CPU socket. Upon booting, it'll spin at max speed; approx. 2 minutes later (on a good day ), the fan speed will start to slow from 2700RPM to 1300RPM. This only seems to happen about 35% of the time. The controller also seems a bit sluggish. Sometimes it won't power up the fan speed even if the temperature goes up to 45-50C.
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I don't like anything that tells the CPU fan it can shut down.

X79A-GD65 8D fan header

Does anyone know the power output of the 4 pin CPU fan header on the X79A-GD65 8D?
thanks in advance.
(V)

It is better to approach the MSI Tech support for this query.
>>How to contact MSI.<<

Is My CPU Fan dying?

Recently installed new MOBO (see below) and CPU (see below). CPU Fan RPM's have been running 4015 constant. (My previous CPU 1700, the fan ran constant 4400). Temp on new CPU stayed constant at 43C to 45C range. Last night, jumped to 64C after I installed Motherboard Monitor and PC reset. This is the stock heatsink that came with processor. I shut down PC overnight and fired up this morning and it's staying constant 25c so far. Should I consider replacing original heatsink with something else? Here are my specs in case my signature doesn't make it. Thanks for you help.
-Motherboard (MSI MS-7051G)
-Bios (Phoenix V3.20)
-CPU (AMD Athlon XP2700)
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-Operating system: Windows XP Pro SP2
Ed

the thermal paste just had to reseat, if fan is changing speeds at will, i would just replace the fan. 25c is a good cooling

CPU Fan Header died .. Options ?

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