makmillion

I have 3x 3 prong plugs for fans, 1x for the cpu, 1 for intake and 1x for exhaust.. the cpu fan reads good, around 1800RPM, but the intake fan I just installed (also a 3 prong, with three wires so it has the fan control) runs but the mobo and PC Wizard both say it's running at 0RPM.

It's clearly running about as fast as the cpu fan.

Can someone shine some light on this? I have the mobo set to 'auto fan control' I believe it's called

Thanks in advance

makmillion

bump.. because I'm very lost with this issue.

[-0MEGA-]

Just double checking, but you did plug the 3-pin plug into the motherboard, correct? If you did I cant see why it's not working..

Try connecting it to a different connector on the motherboard.

__________________
Desktop // Laptop
Core 2 Quad Q9550 @ 4.0GHz // Core 2 Duo P8400 2.26GHz
Asus Rampage Formula X48 // Intel PM45
ATI 4870X2 2GB GDDR5 // 512MB GDDR3 9800M GTS
4GB (2x 2GB) DDR2 940 // 4GB DDR3 800
750GB SATAII w/32MB // 200GB SATAII 7200RPM
Creative SB X-Fi Titanium Fatal1ty
SilverStone 750W +12V@60A
3DMark06: 21391 // 9179

makmillion

I plugged it into the 3 pin on the motherboard, yes.. I tried the other port as well (exhaust) and the same thing happened, it reads zero in bios.

makmillion

Another thing I noticed is that the exhaust fan plug (3pin, on the motherboard) only allows the fan to run at low speed, where-as the intake 3pin plug on the motherboard has it at what appears to be full speed.

EDIT: Now I tried the other plug again (Exhaust) and it shows the fan at 1844RPM..

lhuser

The sensors doesn't always work on some boards. I have one with a bad CPU fan sensor. It's not much of a big deal though.

__________________
Main Rig:
E8400 / CM GeminII cooler / 4GB RAM DDRII-667 / Geforce 8600GT 512M / CM CM690 Case / 430W PSU / P5E-VM DO (ugh) / 2x160GB HDDs) / Vindows Vista Business x86_64
Secondary rig:
X2 6400+ / 2GB RAM DDRII-800 / Geforce 6100 (to upg) / Xblade Case / 420W PSU (BS) / 2x250GB / M55Plus-S3G / Vista Business x86_64
To upgrade:
Main = 8GB RAM DDRII-1200 / New board / New PSU?
Sec = 8GB DDRII-1200 / 3x250GB RAID 5 / New PSU

makmillion

That wouldn't bother me so much if I could explain why the intake blows at full speed, but the exhaust runs at the same speed as the cpu fan.

lhuser

They probably have the same speed because it's how it's made. It depends from each fan.

__________________
Main Rig:
E8400 / CM GeminII cooler / 4GB RAM DDRII-667 / Geforce 8600GT 512M / CM CM690 Case / 430W PSU / P5E-VM DO (ugh) / 2x160GB HDDs) / Vindows Vista Business x86_64
Secondary rig:
X2 6400+ / 2GB RAM DDRII-800 / Geforce 6100 (to upg) / Xblade Case / 420W PSU (BS) / 2x250GB / M55Plus-S3G / Vista Business x86_64
To upgrade:
Main = 8GB RAM DDRII-1200 / New board / New PSU?
Sec = 8GB DDRII-1200 / 3x250GB RAID 5 / New PSU

69mako

On my Asus board, i have 5 ports to plug fan into, but only three of them can be monitored. Maybe you have the same situation? If you can, try a different plug on the board.

Mako

makmillion

I figured out that the mobo has 3x 3 pin fan plugs, 2 of which can be monitored.

CPU Fan - Monitored
SYS Fan - Monitored (Exhaust)
PWR Fan - Not-Monitored (Intake)

I'm now curious why they call the intake fan 'PWR Fan'..

__________________
Mainboard: MSI K9NBPM2-FID
CPU: AMD x2 3800+
RAM: Kingston / 5GB (2GB + 2GB + 512MB + 512MB @ 4-4-4-12)
Video Card: evga 7600GT (256MB GDDR3)
HDD: Seagate Barracuda 250GB 7200.10 (16MB Cache) x2
Optical: LG H41N + LG H44L
Case: Xclio 188A (Black/Blue)
OS: XP Pro
Display: Acer AL2016W
Audio: Logitech x-230 (Arrived - man these things rock!)