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Cooler Master SickeFlow fans blinking at low RPMs

post #1 of 9
Thread Starter 
I've controlling 2 120mm SickleFlows with a built in fan controller on the CM Storm Trooper. Unless the controller is on the max setting, the fan LEDs blink. I've read somewhere that getting a different fan controller fixes this, but I want to be sure before I go out and buy one... Anyone have a fix or is getting a different controller the only way?
post #2 of 9

Sounds like you have a PWM fan controller.

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alpha updated
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secundus
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post #3 of 9
Thread Starter 
Quote:
Originally Posted by ehume View Post

Sounds like you have a PWM fan controller.
The connectors that connect to the fan are 3 pin though...
post #4 of 9
I don't have problems with them "blinking", but when I set one to under ~40% voltage in SpeedFan they really dim. At ~25% they just go out. Are you running them at, say, 30%?
post #5 of 9
Thread Starter 
Quote:
Originally Posted by llm710 View Post

I don't have problems with them "blinking", but when I set one to under ~40% voltage in SpeedFan they really dim. At ~25% they just go out. Are you running them at, say, 30%?
I don't know the exact percent because the built in fan controller doesn't exactly say. All I know is that the controller has 6 settings, and I'm running the fans at setting 1 (lowest). The SickleFlows blink on every setting except 6 (highest).
post #6 of 9
Quote:
Originally Posted by ehume View Post

Sounds like you have a PWM fan controller.
Yeah, that's could be a problem. I know with AC that LED bulbs flash.
post #7 of 9
Thread Starter 
Quote:
Originally Posted by Art Vanelay View Post

Yeah, that's could be a problem. I know with AC that LED bulbs flash.
Correct me if I'm wrong, but aren't PWM fans 3 pinned? The SickleFlows only have 3 pins and the connector that the SickleFlows connect to only have 3 "receivers" to connect to...
post #8 of 9
Quote:
Originally Posted by Iamazn View Post

Correct me if I'm wrong, but aren't PWM fans 3 pinned? The SickleFlows only have 3 pins and the connector that the SickleFlows connect to only have 3 "receivers" to connect to...
I missed that. I used to have Sickleflow fans and they never blinked like that on a 3 pin header.
post #9 of 9
I have the exact same problem. Is there a fix for this or does the fan controller need to be RMA'd?
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