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GPU fan stops spinning every 2 seconds

Tags:
  • Graphics Cards
  • Fan
  • GPU Fan
  • Graphics
Last response: in Graphics Cards
December 22, 2012 10:09:46 AM

Hello, I have a problem with my GPU (hd 6950 2gb) fan.
The fan doesn't spin continuously and causes my card to overheat. When the fan stops spinning it makes a loud humming/buzzing noise.
Now, i don't know which part is faulty, the PSU, the fan or the PSU pins.
All other components work just fine btw, any suggestions?

EDIT: If it helps I checked the following in MSI afterburner:
idle temp is 85 Celsius.
idle fan speed is at 90%, even tho the fan tachometer of the fan doesn't ever get past the 2100 RPM, with constant raises and drops from 0 to 2100 RPM.

More about : gpu fan stops spinning seconds

a b U Graphics card
December 22, 2012 10:20:51 AM

How you checked your Fan?
Install MSI Afterburner. It will tell you the Temps & Fan speed of your GPU
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December 22, 2012 10:22:56 AM

Sumukh_Bhagat said:
How you checked your Fan?
Install MSI Afterburner. It will tell you the Temps & Fan speed of your GPU

My bad, in the OP i posted the results from afterburner.
I also know it is the fan because I see it stop spinning every few seconds.
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a b U Graphics card
December 22, 2012 10:27:11 AM

When did you buy it?

If it is new, then it would have come Faulty.
If it is old, then it must be broken
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December 22, 2012 10:30:53 AM

Are you sure its the gpu fan? Can't it be the psu pins or something like that?
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a b U Graphics card
December 22, 2012 10:39:10 AM

It is more likely to be a GPU problem.
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December 22, 2012 10:41:35 AM

OK thank you kind sir.
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a c 104 U Graphics card
December 22, 2012 11:29:27 AM

sounds like the bearings on the fan has failed... if you spin it around when the pc is off does it turn freely or does it feel jammed? If it is ok the magnets in the fan should make it wobble back and forth a bit just when the spinning is about to stop.

edit typo
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December 22, 2012 1:29:25 PM

and if they dont do that?
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a c 104 U Graphics card
December 22, 2012 8:36:34 PM

bg1230 said:
and if they dont do that?
that means there is too much friction in the bearings. if the fan has sleeve bearing there's not much you can do to fix it (it would need to be replaced), but if the fan has 'old' fashioned ball bearings you could oil it up like shown here: http://www.dansdata.com/fanmaint.htm

if you need to replace it, it's probably easier just to ghettomod some case fan on the heatsink... as long as there is air moving through the sink it should work just 'fine' :D 
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December 23, 2012 7:03:32 AM

Best answer selected by bg1230.
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December 23, 2012 7:35:57 AM

How can i check its not a PSU problem before i replace the fan?
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