T40, the fan never stops when I use 802.11 a/b/g wireless ad

[jhujb]

I bought a thinkpad T40 series a few days ago.

When I turn on the computer, after 10-15 minutes
later, the fan starts spinning and never stop (it
emits not hot air and I believe it is running
constantly). However, during spinning, the sound is very quiet.

However, this only happens when I turn on wireless
function. If I turn off the Mini PCI adapter wireless
function (Fn+F5) and use ethernet cable for internet, the fan
is working fine (i.e., sometimes turns on and a couple
of minutes later it turns off). So I thought it is
a defective wireless card problem and changed the
wireless card. But the fan problem occured again.

Is it normal condition or is there any way to set the
fan environment such as heat detect?

John

[jhujb]

Hello again,

Do you think it will fix the problem if I change the 11 a/b/g card to 11 b card? I am not sure if 11 a/b/g card consumes more energy (generate more heat) than 11 b card. If so, 11 b might emit less heat than 11 a/b/g card.

Anyone knows how much energy is used by 11 a/b/g and 11b?

[eriqesque]

Well the wireless card emits quite a bit of heat so that could probably
do it.

Don't think it's any specific card but all in general.

[jhujb]

Thank you for your reply.

I am curious if your machine has same symptom (i.e., fan is running constantly when you use the wireless card)

My computer emits the air during the spinning but the air is not hot (seems cool). So that is why I thought that the fan is running unnecessarily..

please reply again..

[Conmee]

Hmm... my T40p had the IBM a/b card (not a/b/g) and the fan generally ran all the time, sometimes very low, sometimes louder when I was doing alot. It also ran all the time when I was plugged into the Dock II docking station. As for running wireless, the only time I did that was when I wasn't docked, and I seem to recall that the fan would occasionally turn off, but for the most part, blew out luke warm air as well on a near continual basis.

Daniel.