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5 Posts

11-16-2011

Denver, CO

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  • Message 731 of 1217

Re: T420s Fan noise Issue

2011-12-09, 17:19 PM

So I have contacted Customer Support in the US, and they were completely unaware of this issue. They are insisting that I send in my laptop to replace the fan, and will not escalate this until I get the fan replaced, which we all know is not the cause of the issue.

 

Any fan that can run at 4000 RPM 24 hours a day is working pretty well!

 

I'm not sure where to go from here. CS doesn't know there is an issue, and won't help. There are no other contacts beyond web sales, which doesn't reply to emails.

 

Does anyone else have any good contact numbers or emails available?

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2483 Posts

04-08-2011

United States of America

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  • Message 732 of 1217

Re: T420s Fan noise Issue

2011-12-09, 21:47 PM

Are all of the Lenovo employees on holiday?

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62 Posts

06-08-2011

USA

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  • Message 733 of 1217

Re: T420s Fan noise Issue

2011-12-10, 20:30 PM

Any updates?

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2483 Posts

04-08-2011

United States of America

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  • Message 734 of 1217

Re: T420s Fan noise Issue

2011-12-10, 22:22 PM

Crickets

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20 Posts

08-13-2011

Germany

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  • Message 735 of 1217

Re: re: T420s Fan noise Issue

2011-12-10, 22:33 PM

JameZ schrieb:
@All,

Engineering has tested on the T420s at their end and the BIOS 1.30 indeed did help slow the fan down when the laptop is on idle and speed up when the laptop is on load.

I would require a volunteer's machine which is stuck at 4k RPM despite idle to be sent in to engineering.

For those who are unable to send the machine in, appreciate if you can drop me a private message with the machine's MTM and S/N. For those who already did, thank you.

//JameZ

@ JameZ: Is still a volunteer needed? I can send my T420s in...

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34 Posts

04-27-2011

San Francisco, CA

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  • Message 736 of 1217

Re: re: T420s Fan noise Issue

2011-12-11, 3:39 AM

This is on AC.

 

Fan Noise

 

Getting very annoying, might consider calling in for a replacment unit to see if they fixed anything.

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2483 Posts

04-08-2011

United States of America

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  • Message 737 of 1217

Re: T420s Fan noise Issue

2011-12-11, 6:22 AM

Well, you have to admit it's running nice and cool. 

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2 Posts

08-23-2011

Michigan, US

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  • Message 738 of 1217

Re: T420s Fan noise Issue

2011-12-13, 6:38 AM

Not mine...  The coolest it ever gets is around 55 degrees celsius.  I thought this was a fan control issue for a long time but now I'm starting to wonder if there is a power control issue to the GPU.   Mine is a 2620m Core i7 w/ Discrete graphics.  The fan is almost always between 3500-4000 RPM...

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3538 Posts

07-12-2010

Malaysia

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  • Message 739 of 1217

Re: re: T420s Fan noise Issue

2011-12-13, 8:01 AM
@antsh,

That pic of yours with fan speed and core temp is a good one ... any chance you can send your laptop in?

@Helvetia,

Appreciate the offer, would prefer to look within the US for now.

//JameZ
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16 Posts

10-26-2011

Canada

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  • Message 740 of 1217

Re: re: T420s Fan noise Issue

2011-12-13, 20:17 PM

An interesting thing happened to me last night with mine..

 

I think it's related to hwinfo, because it only happens then.

 

For the first time, my fan got stuck @ 4000 rpm.

 

I was @ 70°C, and opened hwinfo, the machine cooled down but stayed @ 4000 rpm.  Usually it goes down to 3600, and 2000 when it hits 40°C

 

maybe hwinfo is helping cause some peoples issues.

 

I had to fully power off to reset things, a reboot wont do it..

 

I will try it again.

 

Machine type: 417152U

 

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