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85 Posts

01-30-2009

Coeur d' Alene, Idaho

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Re: [S10/S10e Fan Problems Collecting Info for Lenovo] S10 fan runs too fast, too often, too loud

2009-03-03, 22:16 PM

wrote:

To all you people upset with us "complainers":

 

In addition to being terribly loud in inappropriate settings, for many users, the the erratic fan also creates lagging/slow-down of the computer itself when the fan cycles on and off.  This is the primary problem that I have with the unit.  The noise itself doesn't bother me as much as the decreased performance that results from it.  Solving the fan problem is therefore more than just a cosmetic issue as your unsympathetic posts imply. 

 

In these tough economic times any amount of money ($400) is too much to spend on something that does not work as it should.  Just as we have been patient with Lenovo for a solution, why don't you guys with perfect S10's try to be a little patient with those of us who have flawed ones please?

 

Thanks!


 

Argument aside.  What is this slowdown that you spoke about?  Does the computer slow down when the fan revs up.  Mine is constantly revving up and down and while it seems like it might slow down, is it not just the impression of it slowing down but instead it is just the CPU varying in load?  I wouldn't think the fan could cause the actual computer performance to suffer, unless of course the processor clocked itself down in order to produce less heat

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13 Posts

02-01-2009

USA

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Re: [S10/S10e Fan Problems Collecting Info for Lenovo] S10 fan runs too fast, too often, too loud

2009-03-03, 22:41 PM
Perhaps it is the CPU varying in load that causes the fan speed to change as I do notice that when the fan revs up the computer slows down. 
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130 Posts

02-13-2009

Bangkok, Thailand

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Re: [S10/S10e Fan Problems Collecting Info for Lenovo] S10 fan runs too fast, too often, too loud

2009-03-03, 23:48 PM

Before the fixes, I felt my S10 did slow down at high CPU core temperature, at which the fan reved and ground at full speed. Right now it doesn't because the CPU core temp. hasn't ever gone above 56C. It is at 39-40C, typically.

 

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12 Posts

12-03-2008

Kuala Lumpur

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  • Message 334 of 1008

Re: [S10/S10e Fan Problems Collecting Info for Lenovo] S10 fan runs too fast, too often, too loud

2009-03-04, 2:36 AM

Well....after awhile i decided to take the S10 apart. Removed the heatsink and thermal tape and replace it with the Arctic Silver 5 thermal compound (www.articsilver.com) Now the tempreture is pretty stable at below 45C. On cool boot i'm getting about 32C. One thing is that the fan does not come on and off as often as it used to anymore :) Of course if Lenovo can give an update BIOS with better threshold, that would be great but for now....it will do.

 

Those who plan to do this mod with the thermal compound, please make sure you put more thermal compound on the Atom processor cos the 1st time i put and fit it all up, my tempreture hit 80C with Prime95 and when i open to check, the heatsink did not even touch the processor cos there seems to be a little gap. Adding a little more thermal compound solve the problem. 

 

P/s: Even without a heatsink, it still runs :p 

Message Edited by Scann69 on 03-04-2009 10:36 AM
Message Edited by Scann69 on 03-04-2009 10:38 AM
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130 Posts

02-13-2009

Bangkok, Thailand

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Re: [S10/S10e Fan Problems Collecting Info for Lenovo] S10 fan runs too fast, too often, too loud

2009-03-04, 4:04 AM

Scann69,

 

Thanks much to confirm  slash's findings and the improvement by this mod.

 

Also, now I learn that Arctic Silver (www.articsilver.com) and Arctic Cooling (www.arctic-cooling.com) are different. I was looking for the Arctic Silver thermal compound but got the MX-2 instead because the shop said Arctic MX-2 is its replacement, which is misleading.

 

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11 Posts

02-17-2009

Ruidoso, NM, USA

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  • Message 336 of 1008

Re: [S10/S10e Fan Problems Collecting Info for Lenovo] S10 fan runs too fast, too often, too loud

2009-03-04, 4:05 AM

For those who try this, please realize this isn't a normal application of the Arctic Silver compound.  Normal application is .001 inches thick - one thousandth of an inch!  I think here they are talking several hundreds of an inch thick - so potentially something like 20-30 times thicker!

 

Does anyone have any measurement or estimate of how thick we're talking for this thermal pad?  I'm trying to locate some metal stock (copper) that I can use in this application later this week and want to have it available when I open the machine:

cpu <-> silver compound <-> copper <-> silver compound <-> heatsink

 

Common thicknesses appear to be .005", .01", and .021"

 

Curious to see what happens to temps. If they look good I will re-open, take pictures and reassemble using thermal adhesive instead of just thermal paste.

 

Tminus5

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130 Posts

02-13-2009

Bangkok, Thailand

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  • Message 337 of 1008

Re: [S10/S10e Fan Problems Collecting Info for Lenovo] S10 fan runs too fast, too often, too loud

2009-03-04, 5:23 AM

tminus5's plan sounds good. Using a copper shim seems to be a better solution than applying an unusually large amount of the thermal compound.

 

Also, it seems like the Production Line of S10 is not consistent. I didn't need to apply a lot of the MX-2 on to the chips. Only one match-head amount was used on each.

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45 Posts

03-03-2009

Germany

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  • Message 338 of 1008

Re: [S10/S10e Fan Problems Collecting Info for Lenovo] S10 fan runs too fast, too often, too loud

2009-03-04, 8:54 AM

Hi,

 

I just wanted to add my experiences to this whole discussion. I own a S10e and also experience a constant on and off of the fan when the netbook reaches its working temperature. With processor speed at 87% (1,4GHz), this is around 46 degree Celsius currently according to Speedfan readout of the Temp Value (Temp1 at 43 and Core 0 and Core 1 at around 51 if that helps anyone). 

Sadly one cannot control the fan speed through Speedfan but since installing Speedfan the fan never reached its highest speed though. That may just be a coincidence.

To add to the discussion on adding a large amount of thermal compound, in my experience of building PCs it only amounts to more heat than less if you use to large an amount as its function is to transport heat to the heatsink not to cool down the cpu.

 

@Mark Hi I know its difficult to provide an eta but a rough estimate for those of us who are eagerly awaiting the new bios would be much apreciated. The S10e is a great product except for the fan problem.

 

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41 Posts

02-15-2009

Japan

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  • Message 339 of 1008

Re: [S10/S10e Fan Problems Collecting Info for Lenovo] S10 fan runs too fast, too often, too loud

2009-03-04, 11:46 AM

tminus5,

If you have the same heatsink as mine installed in your unit, then a little warning that the heatsink is marginally tilted toward the chipset because one of the black ring spacers has been removed in what seems to be an attempt to forcefully mate the heatsink and the chipset. As a result the bottom of the heatsink does not align to the suface of the cpu and chipset.

 

Since the chipset already has good contact with the heatsink, we only need to prepare the copper shim for the cpu. Additionally, to compensate the tilt of the heatsink, it would be safer to reuse the preinstalled thermal rubber pad (be careful, the rubber pads are very fragile). The rubber pad will provide sufficient heat conductance if it is deformed enough (initial thickness of the rubber pad: 1mm). The size of the shim should be 12mm x 9mm (thickness 0.5mm - 0.7mm). Aluminum (A2071) is good enough if you cannot find copper shims as there is little gain from using materials with better conductance than the heatsink.

 

The final setup;

cpu <-> rubber pad <-> copper or aluminum shim <-> thermal compound <-> heatsink

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11 Posts

02-06-2009

Germany

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  • Message 340 of 1008

Re: [S10/S10e Fan Problems Collecting Info for Lenovo] S10 fan runs too fast, too often, too loud

2009-03-04, 11:47 AM
Thank you,. Mark, for the update. But unfortunately my patience will find it´s end, if again nothing is really solved with the next bios. To all that stated, the fan would be no problem at all: many forums worldwide are filled with this issue... I decided to give Lenovo this second shot - otherwise I´ll sell my S10e and buy a Samsung NC10. THAT´s really QUIET...
Message Edited by hendrik on 03-04-2009 12:49 PM
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