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microfishd1
Token Ring
Posts: 265
Registered: ‎02-19-2015
Location: US
Views: 1,342
Message 1 of 5

T40 fan squeal and temp

Hi all,

 

I was using my old T40 today, and noticed that the cooling fan is developing a constant (when running), very quiet, and very high-pitched squeal (it is a constant "eeeeeeeeeeeeeeeeeeee").  I have never heard this before.  Tilting and rotating the laptop seems to make no difference. Obviously, a fan squeal is a sign of dirt or bad bearings, etc., but is this a reason for imminent concern?  Smiley Sad

I am pretty sure this is the cooling fan cecause the noise stops when the cooling fan turns off, and sounds as long as the cooling fan does.  Also, it is from the left side of the laptop, and the hard drive under the right side sounds fine.

 

And is 53 degrees C/127F very hot for that age/generation of parts?

 

Thanks.

-----------IBM T40: XP PRO SP3, 14.1" 4:3 display, 512MB DDR RAM, 40GB HDD, ThinkLight, DVD.
Lenovo Ideacentre H215: AMD Athlon II X2 215, 500GB HDD, 4GB DDR3 RAM, 64-bit Win7, AMD 760G.
P50 i7, M2000M, 1x16GB RAM, 1080p non-touch, 512GB SSD, 500GB HDD, Backlight, No WWAN, No PWM, No Raid.
TuuS
Bit Torrent
Posts: 2,220
Registered: ‎01-02-2011
Location: US
Views: 1,325
Message 2 of 5

Re: T40 fan squeal and temp

Depending on how you measure the temp it could be normal. The cpu chip could be considered normal running in the mid 80c degrees under load and mid 60c degrees with moderate use, but if the actual body of the laptop is reaching 50c you may have a serious problem. I recommend you open up and clean your fan. Get some good quality thermal paste for your CPU chip such as Arctic Silve 5 brand. You can also use some light machne oil like commonly used in sewing machnes or razors to oil the fan shaft. it's been a while since I've worked on a T40 but I recall they are pretty easy but the fan may be rivited on the heatsink so a dremel grinder to remove the rivits and some adhesive that can tolerate heat lke 3M brand "super weatherstrip adhesive", or epoxy, or even superglue should work nicely. The fan motor isn't normally serviced separately but there are aftermarket fans avalab.e to replace just the motor and they work well as long as you get the proper one and they are also very cheap compared to replacing the whole heatsink/fan assembly. I think I paid about $12 for the last fan motor I bought, maybe even less, but often cleaning out the dust will stop nose and improve cooling.

ThinkPad W-510 i7-820QM(1.73-3.06GHz) Quad Core... ThinkPad T500, T9900, 8gb SSD...FrankNpad T-60p/61p (X9000 2.8ghz) 8gb SSD ips FlexView...ThinkPad T-61p (T9300 2.5ghz) 8gb ram...Thinkpad X-61 Tablet 8gb ram.
microfishd1
Token Ring
Posts: 265
Registered: ‎02-19-2015
Location: US
Views: 1,203
Message 3 of 5

Re: T40 fan squeal and temp

Thank you very much for your fast response. To my shame, I forgot to check for an answer, and then I had issues logging in.
TBH, I have stopped hearing the noise, and I really only heard it if I was listening carefully.

The 53° C was what HWMonitor 1.22 reported for either the motherboard or the CPU (it reports both, but those are the only sensors it does report). In the past, the fan has kicked into high (or at least the same high level that it cycles into briefly when booting) when HWMonitor reported these internal temperatures as reaching 59-60° C. (139-145 ° F.) At those temps, it can get uncomfortable to the touch if I have it sitting on my lap, but since I have a cooling pad it doesn't really bother me. (The cooling pad doesn't work most of the time (broken wire), other than the fact that the concave floor of the pad puts ~1" between the floor of the pad and the bottom of the T40 in the center of the pad/laptop. It clears the path for airflow, but that is about all that it does.)
The T40 sometimes reaches those temps if I page through OpenOffice .ppts very quickly, but it cools off rather quickly again after the fan turns on (and/or I reach the slide that I wanted).
Years ago, I put it away in its original leather case (ThinkPad(R) Carrying Case, made by Targus--http://oi63.tinypic.com/ypdf8.jpg--not my pic, but the same case). I thought I had shut it down, but it was hung on closing a graphics-intensive process, and the laptop baked for 6-8 hours until I found it. By this point, it hurt to touch the case- I almost dropped the laptop, and had to pass it from hand to hand until it cooled enough to open (and close that process!). Anyway, that T40 has never been the same since.
-----------IBM T40: XP PRO SP3, 14.1" 4:3 display, 512MB DDR RAM, 40GB HDD, ThinkLight, DVD.
Lenovo Ideacentre H215: AMD Athlon II X2 215, 500GB HDD, 4GB DDR3 RAM, 64-bit Win7, AMD 760G.
P50 i7, M2000M, 1x16GB RAM, 1080p non-touch, 512GB SSD, 500GB HDD, Backlight, No WWAN, No PWM, No Raid.
TuuS
Bit Torrent
Posts: 2,220
Registered: ‎01-02-2011
Location: US
Views: 1,200
Message 4 of 5

Re: T40 fan squeal and temp

I generally like to clean my fans and replace the thermal paste every couple years and you are talking about a model close to 15 years old, so my guess is your thermal paste has turned to a hard crust and any bump or jolt over the years has broken the seal between the heatsink and cpu so you don't have effective heat transfer combined with the fact that your fan is probably full of dust. This is pretty easy to fix, just get some medical alcohol to clean the chip's die and heatsink and some Arctic Silver #5 thermal paste. After cleaning make sure the cpu is covered with paste, not too much, not too little, and you should be fine. Hopefully this will make a big difference.

 

Good Luck

ThinkPad W-510 i7-820QM(1.73-3.06GHz) Quad Core... ThinkPad T500, T9900, 8gb SSD...FrankNpad T-60p/61p (X9000 2.8ghz) 8gb SSD ips FlexView...ThinkPad T-61p (T9300 2.5ghz) 8gb ram...Thinkpad X-61 Tablet 8gb ram.
microfishd1
Token Ring
Posts: 265
Registered: ‎02-19-2015
Location: US
Views: 1,068
Message 5 of 5

Re: T40 fan squeal and temp

thanks!Man Happy

-----------IBM T40: XP PRO SP3, 14.1" 4:3 display, 512MB DDR RAM, 40GB HDD, ThinkLight, DVD.
Lenovo Ideacentre H215: AMD Athlon II X2 215, 500GB HDD, 4GB DDR3 RAM, 64-bit Win7, AMD 760G.
P50 i7, M2000M, 1x16GB RAM, 1080p non-touch, 512GB SSD, 500GB HDD, Backlight, No WWAN, No PWM, No Raid.

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