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4 Posts

02-01-2015

Genève

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Re: T420s Fan noise Issue

2015-02-01, 11:52 AM

@andreynw : Did you ever attempt this? What were your results? I'm currently experiencing overheating problems. I noticed that the fan never went particularly high, and that the system was constantly very warm. So I installed "TPFanControl" (http://www.staff.uni-marburg.de/~schmitzr/donate.html) which now manages the fan much more actively.

 

As a result the fan is often at 7-8000 RPM, with the CPU on 90 degrees plus. To the week I will open the laptop and clean out for dust (second time in the laptop's nearly 4 year lifetime), and I hope that will do the trick.

 

But I cannot fail but think that the fan is too weak for the task, as some have pointed out in this thread. So I would be very interested to learn if you got any good results changing fans!

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3 Posts

06-08-2014

Russia

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Re: T420s Fan noise Issue

2015-02-02, 17:11 PM
Hello!
In the end, I bought a fan 04W0416, it all noises and sounds are gone, the fan worked perfectly quiet. And you judging by the description of the symptoms, just need to clean the cooling system and replace the thermal grease and the problem with overheating is solved.
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48 Posts

01-17-2015

Melbourne, Australia

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Re: T420s Fan noise Issue

2015-02-04, 4:09 AM

@andgreynw: Good work for posting both pictures of the alternative fans. In my experience, you are correct, 04W3485 is the better fan which is quiter and more lower pitched than 04W1712. Of all the fans I've heard/seen (I've heard about 3 or 4), the fan with the copper colouring seems to be the quiter one.

 

@gaffel: Can you describe your overheating symptoms? Just hot? Any random shutdowns?

 

A fan replacement might fix your issue. I would be cautious however, to rule out whether you have a faulty system board. On my T420s, I originally experienced untolerable fan noise, and had the fan replaced under warranty. A few months later my machine began to randomly reboot and shutdown. On this forum, there is some indication that some T420s developed (or were shipped with) systemboards. My machine is currently experiencing random shutdowns which are not related to heat (temp seems to stabilise at 60 degrees C). So first check that your machine is not randomly restarting or having BSODs- because if you end up with a new motherboard you should get the upgraded model anyway.

 

Also, I would also advise against running TPFanControl while you are trying to diagnose the machine. I ran TPFanControl for approximately a year and all it did was disguise the hardware faults that were underlying. I would not run TPFC if your machine still has warranty. There is no reason why we should have to use software to cover up hardware faults.

 

Some links about reported T420s system board (and fan) problems are in this thread:

http://forums.lenovo.com/t5/T400-T500-and-newer-T-series/T420s-A-knowledgebase-of-known-hardware-issues-please-contribute/m-p/1868554#M107696

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4 Posts

02-01-2015

Genève

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Re: T420s Fan noise Issue

2015-02-04, 9:47 AM

@Unstable_T420s: I use a "Series 3# docking station, and it is shaped in a way that makes the fan on the Thinkpad blow directly into the docking station and not into fresh air, not ideal .... So the problems mostly occur when I'm docked:


Browsing the web with some tabs open, videos, gifs etc. makes the fan quickly spin up to max and the CPU to 95 degrees and GPU to around 80-85 degrees I believe. It goes slow as hell, even the mouse pointer lags sometimes. I have 8GB RAM, and checking the resources I have plenty, but it goes slow anyway. I have three hard drives, 1 msata 64 GB which I have the system OS on, one 500GB in the traditional slot as well as a hard drive where the CD rom used to be.

 

I have bought this kit: https://www.ifixit.com/Store/Tools/54-Bit-Driver-Kit/IF145-022 after reading good reviews, and I will buy a can of pressurized air this week. I will open the keyboard and blow out the dust. I have previously added ArticSilver 5 thermal paste to the CPU and GPU, and I will not do that again now. Hopefully it will work, if not I will try to re-add paste, if that doesn't work buy a new fan.

 

Never give up! :P

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4 Posts

02-01-2015

Genève

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Re: T420s Fan noise Issue

2015-02-04, 9:49 AM
@Unstable_T420s: My laptop is coming up on 4 years old now, surely a faulty motherboard would not still be covered? I bought it in Norway, without any extra warranty package.
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48 Posts

01-17-2015

Melbourne, Australia

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Re: T420s Fan noise Issue

2015-02-07, 3:52 AM

@Gaffel: I have the same problem as you. When I open a few tabs in Firefox, or if firefox crashes and restarts with multiple tabs, the fan spins up really quickly. Scrolling also becomes very slow when there is a high quality image (gif) etc. on the screen.

 

My thought is that it's not the CPU but the GPU. My reasoning is, I can always reproduce a BSOD while running Video Memory Stress Test. Sometimes it takes anywhere between 1-7 hours, however I can pretty much guarantee a BSOD will occur. If you could run it, perhaps overnight, and report back we might be able to confirm whether we have the same problem? I would appreciate it, as not many other people seem to care or have T420s issues!

 

http://www.softpedia.com/get/System/Benchmarks/Video-Memory-stress-Test.shtml

 

My temps also tend to sit around 55-60 degrees (CPU) and my T420s still crashes, so I don't think it's a thermal protection shutdown.

 

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4 Posts

02-01-2015

Genève

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Re: T420s Fan noise Issue

2015-02-10, 10:56 AM

I tried the stress test, DirectX with Test set "full", and no errors occurred:

 

Changing video mode to 640x480x16...OK
[10.02.2015 09:58:03] Test started for "Primary Display Driver (Intel(R) HD Graphics 3000)"...
Trying 16bpp RGB:565 mode...OK
Trying 16bpp RGB:555 mode...NOT SUPPORTED (Code: 80004001)
Trying 16bpp BGR:565 mode...NOT SUPPORTED (Code: 80004001)
Trying 32bpp RGB:888 mode...OK
Trying 32bpp BGR:888 mode...NOT SUPPORTED (Code: 80004001)
[10.02.2015 09:59:07] Pass completed (0 errors found).

 After I tried a continous test, 103 passes over 1 hour and 50 minutes, no errors there either.

 

For my case, I think blowing the fan and heatsinks with pressurized air helped quite a lot. Right now, 3 minutes or so after the continuous stress test, the CPU is 55 degrees warm and the GPU 48 degrees warm.

 

Please note that I ran the tests with tpfancontrol on ....

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48 Posts

01-17-2015

Melbourne, Australia

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Re: T420s Fan noise Issue

2015-02-12, 4:32 AM

Hi Gaffel, thank you for this. I think 55 is the right temperature (that's the same temp range that my T420s reached).

 

After running a temperature gauge next to the laptop exhaust vent, I don't think overheating seems to be the issue. Turns out I had a stick of ram which caused a random reboot after 11 hours in Memtest (without any errors). That ram stick is now history.

 

I also experienced a reboot/BSOD after about 7+ hours of running video memory stress test, so this may have been caused by the same RAM issue. If you are not having BSODs yourself, I wouldn't worry.

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3 Posts

06-08-2014

Russia

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Re: T420s Fan noise Issue

2015-02-15, 3:52 AM


Six months ago I bought a supported thinkpad t410s and it had a serious problem: while surfing the Internet, and especially when watching videos on youtube, the laptop started very slow, for example a folder with a file opened for a few minutes, the video on youtube distorted, half of the laptop screen was covered with artifacts, another part of the screen worked intermittently, not helped even switching off and on the laptop! The only solution was to turn off the laptop by removing the battery. But I note that the BSOD error was not! I have long suffered and the method of selection has found a solution: in BIOS, you have the option PCI Express Power Management switch in the Disable position. After that, the laptop was working like a Swiss watch :) No problem.

236.jpg

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1 Posts

02-09-2015

Pittsburgh, PA

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Re: T420s Fan noise Issue

2015-05-05, 3:05 AM
@andreynw thanks for posting about fan replacement. I bought a fan 04W0416 according to your suggestion however I found out it didn't fit with my T420s which has discrete graphics requiring an extra heatsink arm.

Then I did a little research and bought a 04W0417. It fits my laptop well and works like a charm - runs very quiet and reliably, and keeps temp near 50 degrees. If anyone has a T420s with discrete graphics and has similar fan noise issue, I highly recommend this model. Rumors are that 04W0417 is better than 04W1713, so be aware of the exact model you buy.
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