Help Needed PWM splitter cable

[ChrisLandin]

Hiya all.

I need a bit of help here please.

I bought a PWM splitter cable to be able to run the 3 fans on my rad of my mobo cpu header which has pwm control. 2 of the fans work perfectly this way but one of them is stuck on full pelt! Why is this? I have tried disconecting the molex power supply to them but that just kills the 3 fans completly! Any ideas?

 

[Tealc]

Sounds like the third fan isn't getting the PWM signal for some reason. All fans receive power from the Molex so there's no point in removing that.

I would start by checking the blue PWM signal wire is firmly attached both ends and if you have a multimeter check continuity of the connection.

Try swapping header from one that slows down to the one that is at 100% and see if the fast spinner moves with the cable.

 

[ChrisLandin]

Sounds like the third fan isn't getting the PWM signal for some reason. All fans receive power from the Molex so there's no point in removing that.

I would start by checking the blue PWM signal wire is firmly attached both ends and if you have a multimeter check continuity of the connection.

Try swapping header from one that slows down to the one that is at 100% and see if the fast spinner moves with the cable.

Cheers man.

I feel such a loser!!

Thanks for the second perspective on it. I did what you suggested and it turns out it was a loose connection on one of the splitters terminals.

Thanks again buddy ive not got quietness