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grinding noisy GPU fan, detach fan from bearings?


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#1 cincinnatus

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Posted 25 January 2017 - 12:37 PM

Hello,
 
I was having this noise this afternoon https://vid.me/HKBT
 
Later I discovered it was coming from the GPU fan.
 
I have opened and cleaned it (it was very dirty) re-applied thermal paste, but the noise won't go away.
 
 
 
model number MBA4412HF-A09
 
 
I tried to lift the rotating piece with the blades (I can do it on my laptop) but it doesn't come off (I didn't try too hard because I don't know if they are all supposed to come off)
 
Is this normal?
What can I do to make this thing silent?
 
 
I have unplugged it because that noise was driving me crazy but now my GPU is at 100C idle
Please, any input is welcome.

Edited by cincinnatus, 25 January 2017 - 12:44 PM.


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#2 ranchhand_

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Posted 25 January 2017 - 03:29 PM

Probably the motor shaft bearings are dry, thus the noise.

2 things you can do:

> #1:cruise Newegg.com and Amazon; in their website search bar, type your motor name and model #. If nothing, then type "GPU fan", or "video card fan". The only thing you really need to know is the spacing measurement on the fan's mounting screws; IOW, how far apart they are. There have to be generic fans that will replace the one you have. I have done this dozens of times on CPU heatsink fans, case vent fans, and a couple of video card fans. In fact, once (in my wild & crazy youth) I used a CPU heatsink fan and modded the mounts to mount on my Rage vid card, then overclocked the bejabbers out of it. :lol:

> #2: remove the motor fan (as you have done already) and usually on these there is a small, adhesived sticky label on the motor, or possibly a small, rubber plug that you can pop-out. Then take some light machine oil ("3 in 1" oil is great at any hardware store) and put a small drop on the exposed end of the shaft and rotate it with your fingers a few times. Repeat a couple of times. Sometimes that will stop it, at least for a while.

Let us know how it goes.


Help Requests: If there is no reply after 3 days I remove the thread from my answer list. For further help PM me.


#3 cincinnatus

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Posted 25 January 2017 - 04:33 PM

Thanks ranchhand...

Really appreciated having someone to talk to about this.

 

1) Thanks, will do that if I can't fix this one.

 

2)

There is the sticker, I lifted it but I can't see the shaft...

http://i.imgur.com/KO0y9Ws.jpg

Tried to lift the fan from the shaft again but it's either stuck or fixed.

 

I have done testing with a battery, here are the tests, one with the cover, one without.

 

https://vid.me/mGKC

https://vid.me/gXG0

 

What do you think, comparing to my first video?

 

I discovered I created a second potential source of noise rebuilding the graphic card, I put the fan power cable between heatsink metal and plastic.

I didn't see there was a narrow pastic path to follow.

That's fixed now but not the starting problem.

I am going to remount it now but this time without thermal paste or I'll go insane, do/undo/do/undo.

 

Why make the fan fixed to the shaft is beyond my understanding!


Edited by cincinnatus, 25 January 2017 - 04:34 PM.


#4 ranchhand_

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Posted 25 January 2017 - 09:12 PM

 

fan fixed to the shaft

Well, that is a possibility; components are made progressively cheaper these days.

I see a small, circular center on the picture; is that rubber, or sealed plastic? Rubber caps look like that. Did you check the other end of the shaft? Sometimes there is an exposed shaft end there.

Another idea, but it's radical and may ruin the motor (well, it's broken already, right?): if both ends of the motor shaft are sealed, pick one end, take a small drill bit slightly larger in diameter & cordless drill and try to drill out the plastic cover. if you have a small drill press that you can attach your electric drill to that would be helpful.  Be careful not to go deeper and damage the shaft or the housing it is in. Once the end of the shaft is exposed, do the oil thing. Then use a small piece of plastic and epoxy glue to re-seal the shaft end and see what happens.

For some reason the Vidme links did not play on my computer. No idea why.


Edited by ranchhand_, 26 January 2017 - 08:52 AM.

Help Requests: If there is no reply after 3 days I remove the thread from my answer list. For further help PM me.


#5 cincinnatus

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Posted 26 January 2017 - 10:38 AM

Thanks for your help ranchhand_

 

I uploaded them here too

 

noise

https://sendvid.com/mt7dtksc

 

fan with cover

https://sendvid.com/h70fh597

 

fan without cover

https://sendvid.com/nzqwof3o

 

 

The circular thing is plastic, I tried to lift it but could not... not sure if it's meant to be lifted, it's smaller than it tooks in the picture. The plastic holes on its sides made me hopeful too but still can't figure it...

 

You can see the other end on the videos, there is a piece of metal.

 

I think I will pass on the drilling, it's a 10$ fan, already wasted too much of my / your time.


Edited by cincinnatus, 26 January 2017 - 10:38 AM.


#6 cincinnatus

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Posted 26 January 2017 - 02:53 PM

I have started looking for a replacement because the noise is unbearable.

 

The intel website says my chipset doesn't have integrated graphics, that means I can't even remove the noisy graphic card because the computer wouldn't work, am I right?

https://ark.intel.com/products/75004/Intel-H87-Chipset


Edited by cincinnatus, 26 January 2017 - 02:53 PM.


#7 cincinnatus

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Posted 26 January 2017 - 04:01 PM

Nevermind, my CPU has it, it's working (I had to replace HDMI with DVI)

 

The computer is silent but the difference is very noticeable... I can tell the difference by only hovering on the chrome bookmarks bar

 

Huh, page scrolling is horrible to the eye as well.


Edited by cincinnatus, 26 January 2017 - 04:11 PM.





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