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G751JY left side fan rattle?

phdraptor
Level 7
Ran into an issue with the G751JY over the past few days:

The left side fan begins making this loud whirring/rattling noise that continues until the laptop is either put to sleep or restarted.

It starts doing this either:
-During typing (usually the system has to be under load/temps have to be up for this to trigger the problem), or:
-Shifting the computer at all (especially forwards/backwards) while it's running, also causes it do do the same.

Sleeping the computer for a minute or so and then waking it results in the fan returning to normal operation/noise levels - waking it up immediately after putting it to sleep lets the rattling noise continue.

Thoughts?

The RMA turnaround time for this is going to be about 3ish weeks - can anyone think of a quick/easy fix, or does it really need to go in for repair?
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18 REPLIES 18

clockworksatan
Level 7
It sounds like there's a faulty bearing in the fan so I'd imagine that there's not a quick and easy fix for this, I'm afraid. 😞
Asus ROG G751JT-T7115H
17.3" IPS, Intel i7-4720HQ, 16Gb RAM, NVidia GeForce GTX970m, 256Gb M.2 SSD + 1Tb SSHD

aeolisio
Level 10
Open it up and blow out the fan with compressed air
3d printed parts and accessories for the G751. You know you want something better than OEM ->https://www.shapeways.com/shops/aeolisio[SIGPIC][/SIGPIC]

Not 100% comfortable with taking apart a laptop that much to get at some dust.

I did blow a little compressed air in through the rear vents (which cleared out some dust, albeit not as effectively as it would have through normally), and not much really changed.

I noted that the whirring pattern and extra vibrations happened on a smaller/quieter scale when the laptop fans were running at a lower RPM (using notebook fan control to monitor temps & speed).

aeolisio
Level 10
I have seen everything from hair to a dead bee get inside the g751 fan and make noise if your not comfortable removing a few screws and lifting the keyboard 3 inches theres nothing you can do besides rma
3d printed parts and accessories for the G751. You know you want something better than OEM ->https://www.shapeways.com/shops/aeolisio[SIGPIC][/SIGPIC]

This is what it sounds like: https://www.youtube.com/watch?v=2aHEeGnA3s4&feature=youtu.be

The mic makes it sound slightly more tinny than it actually is.

aeolisio wrote:
I have seen everything from hair to a dead bee get inside the g751 fan and make noise if your not comfortable removing a few screws and lifting the keyboard 3 inches theres nothing you can do besides rma


I finally decided to do that before I sent it in for an RMA.

Turns out, the fan is unbalanced/wobbling a bit (sort of how a car wheel spins with a bent axle)- and that wobbling results in the fan vibrating pretty substantially at any speed. Cleaning out the fan of dust didn't do anything.

Thanks for the suggestion. I guess I have to send it in, then.

phdraptor wrote:
I finally decided to do that before I sent it in for an RMA.

Turns out, the fan is unbalanced/wobbling a bit (sort of how a car wheel spins with a bent axle)- and that wobbling results in the fan vibrating pretty substantially at any speed. Cleaning out the fan of dust didn't do anything.

Thanks for the suggestion. I guess I have to send it in, then.

your welcome. yep or replace it yourself the fan is usually 10 bucks on ebay and its only a few screws and asus might always blow it with air and send it back to you with the same fan.
3d printed parts and accessories for the G751. You know you want something better than OEM ->https://www.shapeways.com/shops/aeolisio[SIGPIC][/SIGPIC]

Evil_Hotdog
Level 7
I might be too late with my answer,
but I had the same problem with the first g751JY laptop, I decided a new laptop doesn't need to be repaired, it needs to work as new.
So I simply demanded a new laptop at the store where I bought it and got one without the noise.
Don't RMA unless it's your last option, in my experience they always **** something up.

Nole3000
Level 7
I use the Notebook fan control software with active user profile according to one of posts replied here, and everything works fine and quiet.