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What's wrong with my 2150RPM GT?

post #1 of 12
Thread Starter 
One of my 2150RPM GTs started making grindy noises a few weeks ago and would persist regardless of what RPM it ran and would become louder the higher I set the RPMs to.

Strangely enough, today I put a magnet (one of those Las Vegas chips magnets) and the noise suddenly disappeared, but would reappear as soon as the center of the chip/magnet was moved away from the center of the fan motor.

Can anyone explain this and if I should just take the fan apart and see if the spring or ball bearings are misaligned or something?


    
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post #2 of 12
You'll probably never get it back together again right if you do. those things are pretty precise. Sounds to me like your fan is dying. a bit of metal fell off something. You can keep it out of the way by playing iron man with the magnet, but it's days are still probably numbered.
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post #3 of 12
Thread Starter 
Quote:
Originally Posted by bombastinator View Post

You'll probably never get it back together again right if you do. those things are pretty precise. Sounds to me like your fan is dying. a bit of metal fell off something. You can keep it out of the way by playing iron man with the magnet, but it's days are still probably numbered.

That's what I was thinking, but I'll just leave it as is unless someone has other input.

I've actually taken all 8 of my GTs apart and painted the blades white about a year ago and they have been running smooth since then aside from this one.
    
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post #4 of 12
well then you might get away with taking this one apart and giving it a good shake to get the offending bit out. Personally though I'd be looking for a good deal on a replacement one, just in case.
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post #5 of 12
It might be a wire or something that the fan's blades are hitting. This happened on my PSU a while back and after using a piece of cardboard to shove the wire away from the fan, the weird noise completely stopped. I was pretty thankful the solution was that easy. In your case I don't know if what I said applies as I have no idea what's right underneath those fans. Magnet detail is pretty weird, but it makes me think that there's something metallic being banged by the fan, especially since the higher the RPM, the more noise you get. Not sure; my 2 cents.
post #6 of 12
Thread Starter 
So I took the liberty of taking it apart as well as another GT I wasn't using and it seems like something is wrong with the double ball bearings that is making that high-pitched grinding sound.

I tried switching the motor/housing as well as the fan blades, but neither got rid of the sound until I switched the fan bearings. The bearings may be going bad or something really thin/small is stuck inside one of the bearings and is causing the noise.

Is there anywhere that sells double ball bearings for the GTs?
    
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post #7 of 12
probably not. Even getting the specs on the bearings to figure out what you need is probably impossible. bearings wear out. I suggest buying a new fan. You could try calling the company, and see if they will even tell you, but I have no confidence in it even working. A lot of stuff that should be repairable just isn't any more.
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crucial ct960 LG blu-ray used venamous x win 8.1 pro 
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Crossover 30Q5 PRO 30" 2560X1600  cheapest piece of crud I could find antec HCG 750 some thermaltake microcenter blue-light-special... 
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post #8 of 12
Thread Starter 
That what I thought. Well at least I had a spare that's being put to use now.
    
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post #9 of 12
Thread Starter 
Just wanted to share some pictures of the tear down:


    
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post #10 of 12
crazy thought... but, have you tried some lube on the bearings? some people recommends sowing machine oil for the bearing on this type of issue

also dip the ring clip that holds the axle of the fan blade into some of that lube would also help. the "metal grinding" sound you are hearing is likely just dry bearings and the ring clip that is rubbing against the axle of the fan blades.
Edited by psyclum - 11/7/13 at 4:22pm
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