[issue: laptop fan] makes grinding, shrill noise (why? how to fix?)

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Evenodd

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Jul 31, 2014
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I don't think this had been a noticeably insidious issue slowly leading up to my fan making loud noises. No, this just started happening yesterday night. My laptop leads a pretty sedentary life and has only been dropped once or twice, but that happened years ago. Last night, my laptop started to rumble and growl near the fan/hdd ports. Didn't think too much of it until the shrill screeching came about. It happened not too intermittently, but there was a small interim between each scream while the laptop kept trembling and making such noises.

So this morning I found out what was making the sounds--the fan. Deducted from first removing the HDD and turning on my laptop to wailing sounds and screeches, and second by dissembling the laptop and blowing compressed air into the fan vents then hearing rumbling sounds (but no screeches for some reason)

Compressed air test
[video="https://www.youtube.com/watch?v=GXaMQLpOOmA"]https://www.youtube.com/watch?v=GXaMQLpOOmA[/video]

Yeah, well, I have no clue what's wrong with it, but a layman such as I thinks it has got to be something with the thingy that holds the fan in place which might be loose or something and the fan could be hitting the housing as it is unstable. I'd love some assistance on fixing this.
 
Solution
dudio
Hard to say what you're seeing there. My thinking was to try revolving it while lifting it or pushing down a bit at the same time to see if you can somewhat recreate what's happening in normal operation. Fact is though, if the fan blades were definitely not touching anything, then it must be the fan itself that is done. If you can replace it, then do so..just make sure it's the same voltage requirement and size.
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Evenodd

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I don't know if I can. Although I could removed the screws from the silver cover, it seems its adhered to the body by some foamy black adhesive.

pics:
top http://imgur.com/a/a4HsE
bottom http://imgur.com/a/xJ6yc
 
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NoNameAvailable

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It sounds to me like the fans scraping off The heatsink/ radiator fins, which may explain the high pitch sound when the fan is on.

Is there By Any Chance SomethiNg Stuck Between The Fan And Grill? im Just Speculating, hope it Turns Out To be Something Simple Like That

Sorry For Weird Caps Placing, typed This ON My phone And Its Acting Very Strangely
 
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Evenodd

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There's nothing stuck between the fan and grill nor between the grill. I shined a flashlight inside the fan housing to check because I'm not sure how to open it safely right now with the weird tape that I'm unsure if I can remove or not.

If this helps anyone, the fan seems to spin fluidly and without noise when I twirl it with my hand. Therefore the problem arises when the fan starts spinning quickly because spinning it with my fingers isn't nearly as fast as with air. Could vibration of a loose part cause the noise?
 
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dudio

dudio

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Apr 26, 2015
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Push down or pull up on the fan and feel if it resists.
It may be the play in the blade mechanism that sucks and no longer revolves well indicating a mildly cooked and cheap fan.
The foam there, in my opinion, has no other purpose than to reduce vibration noise. Cut it on the seam with a sharp knife
 
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Evenodd

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I was able to detach the fan from the heatsink without messing with the tape. The silver cover is actually glued onto the heatsink, whereas I had thought it you could remove it, so to detach the fan all you have to do is pry it away from the cover after you unscrew it from it.

I wiggled the fan bit around and it gives way (though slightly) laterally. This isn't normal is it? Replacement time?
 
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dudio

dudio

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Apr 26, 2015
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Hard to say what you're seeing there. My thinking was to try revolving it while lifting it or pushing down a bit at the same time to see if you can somewhat recreate what's happening in normal operation. Fact is though, if the fan blades were definitely not touching anything, then it must be the fan itself that is done. If you can replace it, then do so..just make sure it's the same voltage requirement and size.
 
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Evenodd

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Jul 31, 2014
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No, the fan isn't touching anything. Found out that the fan itself is making the noise while spinning it with my hand though. Case closed then, thank you very much! :)
 
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