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Fans tick, tick, tick, tick...............

post #1 of 8
Thread Starter 
The last 5 fans I have purchased all have noticeable ticking noise, I got a couple of yate loon D14SL-124UB led fans, then replaced with a pair of NB-BlackSilentPro PK2 and a XIGMATEK XLF-2006 Led. At first I thought it was my fan controller in the nzxt phantom case, so tried the fans in other rigs and they still ticked and they are all mounted vertically
Have I just been unlucky, or have I picked badly? I have used nexus fans for years and never had a problem. The 5 fans I have pulled from the system and are basically useless and unless the retailers will accept them as faulty I will be stuck with them.

So for you fan experts what causes this ticking, is it electrical, can it be fixed and if not, please some recommendations for 2 x 140mm quiet, low rpm fans that will under volt well, and don't tick vertically or horizontally:D
post #2 of 8
loose cable hitting fanblade?
post #3 of 8
Fans don't normally "tick" so if you have (5) of them ticking in two different PC's you have set a new world record... wink.gif

Low quaility fans may occasionally have a ticking bearing but it's not usually consistent, it comes and goes. They can be lubricated.

Do you hear the ticking noise when you PC is off????
post #4 of 8
Thread Starter 
In my case there are 2 x 200mm nzxt fans, 3 x 120mm nzxt fans and 2 noctua 120mm fans on the cpu cooler, I get no ticking from these. I also have 6 nexus fans and 4 antec fans from previous builds and none of these tick.
I tried lubricating the yate loons as per ehumes thread but it didn't help, pc is silent when it is off. I have 3 computers around the house and the 5 fans all tick on those.
post #5 of 8
Try spinning them by hand and see if you can hear anything, or feel a resistance. What are you using to control the fans? are they directly on the mobo or in a fan controller. I have seen that if you have a low quality controller it can make the fans do some strange things and get some strange sounds.
Deauboy16
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Deauboy16
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post #6 of 8
Are they hooked up to PWM?
    
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post #7 of 8

Some fans tick because of the switching noise in their pcb's. Scythe once sold a fan whose selling point was a pcb that put the switching frequency up where we can't hear it.

alpha updated
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secundus
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alpha updated
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secundus
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post #8 of 8
Thread Starter 
If the fans are spun by hand there is no ticking sound. I have connected the fans through the fan controller built into the case, direct to the mobo and using a molex to 3 pin fan connector they all still tick. I think it is something to do with the switching noise of the pcb as ehume has said.
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