Odd noise coming from the horizontally placed fans

Houston, we have a problem.
I have quite a few fans in my second rig, and only two of them are horizontal.
At first the one at the top of the case started making a weird sound sometimes. Hard to describe it. Reminds me of the pump noise a bit. I could stop it, then let it run again, and it would be silent. I got tired of this and removed it.
Now the same started happening with the second fan. The problem is that this second horizontally placed fan is on my graphics card, and I cannot really replace it.
Is there any idea what I can do to fix it?
Any help would be much appreciated. Thanks! :up:

what kind of fan is it, u have to use a 2 ball bearing as if u try to use a sleeved motor it will do what u are talking about

Erm, just a normal fan... Similar to

https://www.pcczone.com/media/catalo...view.jpg_2.jpg

No clue if it tells you anything!

look at the back it should say what kind of motor it has on the sticker

Will do. How am I supposed to check this for the GPU fan, though?

oh i thought that u meant on a replaced HS

The first fan that went bad was similar to the one I linked above.
The GPU fan is this one:

http://www.3dnews.ru/_imgdata/img/2007/07/10/53623.jpg

Any more ideas what to do with the GPU heatsink fan from the picture above?
What can be causing the noise anyway? It doesn't have the noise all the time... Can suddenly start and stop... And it's constantly spinning for sure.

Quote:

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Originally Posted by zalbard

Any more ideas what to do with the GPU heatsink fan from the picture above?
What can be causing the noise anyway? It doesn't have the noise all the time... Can suddenly start and stop... And it's constantly spinning for sure.

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Sounds like its starting to give up. I'd buy one of those pci-slot fans, pull out the fan and glue it in place on the gfx card, should work :D

Quote:

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Originally Posted by wez

Sounds like its starting to give up. I'd buy one of those pci-slot fans, pull out the fan and glue it in place on the gfx card, should work :D

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This. I had that same problem awhile ago when i had an aftermarket cooler on my gpu. It will make sound when it gets off balance and starts spinning weird and one day it die out soon afterwards.

Meh, thought so. :(
It's kind of funny that horizontally placed fans are dying first, though. Interesting observation.
Ah well, going to look for a replacement! :D
Thanks everyone for your feedback! Even though we couldn't find a fix, but it is still very much appreciated. :up:

This might be worth a shot.

sleeved bearing fans ........ assumed
they normally meant to be place on vertical ... if placed on horizontal, the lubricant doesn't retained correctly and thus causes extra noises ... sometimes, even burning smell may occur ... not to mention it shortens the lifetime of the fan

get ball bearing fans if you wish to place the fan horizontally