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PC fan is having trouble with the 4 pin connector

Last response: in Components
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August 24, 2012 11:49:08 PM

Hello,
i have a red LED coolermaster fan with a 4 pin connector and i plugged it into the 4 pin connector on the motherboard and the leds were on but very dim and the fan wouldnt spin, so then i plugged it into the 3 pin connector on the motherboard and the fan was working fine but i want to be able to have it in the 4 pin connector so i can cchange the speed because its a very fast fan
a b V Motherboard
August 24, 2012 11:52:57 PM

benprestwood said:

I have a fan with the 4-pin connector and I plugged it into the 4-pin connector on my motherboard, and the LED was working, but was very dim, and the fan wouldn't spin, so then I plugged it into the 3-pin connector on my motherboard, and the fan was working fine.


Looks like the 4-th pin on your fan's connector is defective. Maybe RMA it?
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August 25, 2012 12:18:40 AM

master_chen said:
Looks like the 4-th pin on your fan's connector is defective. Maybe RMA it?

I dont want to sound like a noob but whats an RMA ?
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a b V Motherboard
August 25, 2012 3:47:25 AM

benprestwood said:
What's an RMA?


RMA
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August 27, 2012 11:44:55 PM

Do you have other 4 pin fans that you can plug into the slot?

I would first trouble shoot this before getting a replacement.

What Cooler Master fan are you using by the way and when did you purchase it?
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a b V Motherboard
August 28, 2012 12:20:10 AM

Some motherbards have a tempature sensor onboard so when he case temp. gets so high it will start the PWM fan, the higher the temp. the faster the fan will spin . Read motherboard manual and it should tell you if you have that functionor not.

PWM, means pulse width modualation
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October 1, 2012 9:28:49 PM

Best answer selected by benprestwood.
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