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ThinkPad NotebooksThinkPad: T400 / T500 and newer T series Laptops
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3538 Posts

07-12-2010

Malaysia

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  • Message 291 of 1217

Re: T420s Fan noise Issue

2011-08-26, 7:36 AM
@All,

Withoutwax has volunteered to send his machine in. We are currently arranging a box to be shipped to customer's location.

//JameZ
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12 Posts

08-24-2011

Munich

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  • Message 292 of 1217

Re: T420s Fan noise Issue

2011-08-26, 9:54 AM
Is Withoutwax machine i5 or i7? I think it would be appropriate to test both! JameZ, why does someone have to send in his machine, although obviously every T420s has this problem.... I thought Lenovo builds those machines...?
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12 Posts

08-24-2011

Munich

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  • Message 293 of 1217

Re: T420s Fan noise Issue

2011-08-27, 7:17 AM
When I am on battery mode, it seems the fan seems to work less although power settings are the same. Is somebody experiencing the same?
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6 Posts

08-24-2011

San Francisco

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  • Message 294 of 1217

Re: T420s Fan noise Issue

2011-08-27, 15:40 PM

wrote:
Is Withoutwax machine i5 or i7? I think it would be appropriate to test both! JameZ, why does someone have to send in his machine, although obviously every T420s has this problem.... I thought Lenovo builds those machines...?

it's an i5.

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1 Posts

08-09-2011

Denmark

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  • Message 295 of 1217

Re: T420s Fan noise Issue

2011-08-27, 22:24 PM

yes, exactly the same here. I have begun to do some planning regarding charging times. Would have wished this wasn't necesarry. But the noise really makes this machine a huge, huge disappointment. It is ok when on battery mode.

 

 

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2 Posts

08-28-2011

Florida, US

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  • Message 296 of 1217

Re: T420s Fan noise Issue

2011-08-28, 19:28 PM

It only happens to me when AC adapter is plugged in and I also have nearly identical settings.  When the computer is running on battery the problem doesn't exist.

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34 Posts

03-24-2010

USA

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  • Message 297 of 1217

Re: T420s Fan noise Issue

2011-08-28, 23:44 PM

I received my new T420s last week with BIOS version: 1.26/1.08. The fan always ran at 4k rpm even the cpu tempreture was just 40.

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3538 Posts

07-12-2010

Malaysia

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  • Message 298 of 1217

Re: T420s Fan noise Issue

2011-08-29, 7:26 AM

wrote:
Is Withoutwax machine i5 or i7? I think it would be appropriate to test both! JameZ, why does someone have to send in his machine, although obviously every T420s has this problem.... I thought Lenovo builds those machines...?

Like I said in my earlier post ... Engineering weren't able to replicate the problem at the lab despite using 2 T420s, that is why they have requested customer to send their machine in.

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207 Posts

08-28-2008

Israel

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  • Message 299 of 1217

Re: T420s Fan noise Issue

2011-08-29, 10:13 AM

Like I said in my earlier post ... Engineering weren't able to replicate the problem at the lab despite using 2 T420s, that is why they have requested customer to send their machine in.


Tell them to put the air-condition above 27C.

___________________________________________________________
Lenovo Thinkpad T420s
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162 Posts

06-16-2010

West Lafayette, IN, USA

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  • Message 300 of 1217

Re: T420s Fan noise Issue

2011-08-29, 18:49 PM

wrote:

Like I said in my earlier post ... Engineering weren't able to replicate the problem at the lab despite using 2 T420s, that is why they have requested customer to send their machine in.


Maybe engineering should make us all a video showing exactly how they are testing this thing...this is starting to drag on for a lot longer than I had expected...

Kudos to JameZ for his efforts here but unfortunately so far no real progress has been made with the T420s fan issues described.

 

 

Last time I sent my T420s in to Lenovo's US headquarters for repair I thought Mark had requested they check out my fan?  Did we ever get anything useful out of that?

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