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2 Posts

06-12-2017

Germany

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Yoga 720 13 fan noise like chainsaw

2017-06-12, 18:26 PM

A few days ago i get my new Lenovo Yoga 720 13IKB. Very nice Product!

At least the fan...first start of the yoga was ok installation was ok.

Fan sounds like a wind, you can hear it but it's ok.

But a couple hours later, the fan starts to sound like a chainsaw!!!

 

Is this normal?

 

I tested something...if i hold the yoga in laptop mode in the air only holding it at the lower right corner, it sounds again like a normal fan, without rattle.

 

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12661 Posts

11-30-2015

Philippines

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Re: Yoga 720 13 fan noise like chainsaw

2017-06-12, 20:57 PM

Hi montello,

 

Welcome to the Community Forums. 

 

There are claims of workaround updating the BIOS and likewise installing fan control.

The way how you describe not having the issue with the laptop suspended without the rattling noise would indicate probable loose parts that causes the noise so I would suggest that you call in technical support instead.

 

Regards



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12661 Posts

11-30-2015

Philippines

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  • Posts: 12661
  • Registered: ‎11-30-2015
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  • Message 2 of 4

Re: Yoga 720 13 fan noise like chainsaw

2017-06-12, 20:57 PM

Hi montello,

 

Welcome to the Community Forums. 

 

There are claims of workaround updating the BIOS and likewise installing fan control.

The way how you describe not having the issue with the laptop suspended without the rattling noise would indicate probable loose parts that causes the noise so I would suggest that you call in technical support instead.

 

Regards



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If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"!
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1 Posts

06-29-2018

Egypt

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Re: Yoga 720 13 fan noise like chainsaw

2018-06-29, 21:54 PM

I solved it through installing Fan control fan control,

I didn't find Yoga 720 so I selected Yoga 2 13 and it works fine after setting target Fan speed to 50%

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40 Posts

09-15-2017

United States of America

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Re: Yoga 720 13 fan noise like chainsaw

2019-02-01, 5:26 AM

I know this reply's a little late, but this always works for me, without needing to underclock my laptop or slow down the fan. I've only ever had to do it twice. The general idea is to open up the bottom lid, inspect if anything like hair or thread is in the fans and to remove it. 

 

Be very careful when you're doing this procedure and make sure to read all of the steps carefully before proceeding. I'm not responsible for any problems that come as a result of trying these steps. 

 

1. Completely shut down the laptop (sleeping or hibernating the laptop isn't good enough). Disconnect any attached devices.

2. Shut the lid closed and turn the laptop over, with the bottom facing up.

3. Using a T5 screwdriver, unscrew all screws on the bottom side. 

  • Make sure to put the screws in a safe place.
  • Also, please group the removed screws based on the row you got them from, because they have different lengths.

4. Use a plastic electronics pry tool or something similar to gently pry open the bottom lid

  • DO NOT use a metal tool to pry the laptop unless you want scratches!
  • PLEASE watch a video or follow these steps if you aren't sure where to pry at, unless you want scratches.

3. Look into the two fans. If there's a strand of hair or thread in there, gently pull it out.

  • The fan hitting it causes the grinding sound 
  • don't remove/unscrew the fan to do this, otherwise, you'll have to redo the thermal paste. If you choose to do so, make sure to do thorough research on how to do it, what pastes to use, how much to use, and watch a several videos. Don't use bad, cheap thermal paste, it will not be worth it. It's costly, so you should not do this all the time.

4. Blow air from the vent at the back side so that the fans spin. Do this with the bottom lid still off. You can also use compressed air.

5. Put the bottom cover back on the laptop, and snap it into place. Don't screw in the screws yet, we're going to test if the noise is gone. 

6. Turn on the laptop. There should be no more grinding fan noise.

  • if there still is fan noise, shut off the laptop completely. Then reopen the bottom lid, and try clearing it again with air.
  • another thing you can do (RISKY) is:
    • Shut down laptop completely and open up bottom cover.
    • Attach a USB mouse
    • With the backside of the screen still on the table and bottom side of the laptop facing the ceiling, open up the laptop just a little bit (30 degrees) so you can see the screen.
    • Turn the laptop on. DO NOT touch any of the exposed circuits, fans, etc.
    • Run some intensive app like Photoshop or a video game, get the fans spinning for a few minutes (5 - 10).
    • Then turn the laptop completely off, and snap lid back on and repeat step 6.
    • If this doesn't work, maybe the fans you have are actually broken.

7. Screw the screws back into the bottom cover

 

How to prevent noisy fan:

- don't use the laptop in bed, if you get a hair or thread stuck in there, the fans keep hitting it, producing ear piercing grinding sounds; otherwise be prepared to follow above steps.

- use the laptop on a clean hard surface.

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