Thinkpads Forum

Good day,

My Thinkpad 600E's fan turns on when the CPU gets hot, but simply does not turn off. It can sit on the table for half a hour, with no tasks running, and the fan will still not turn off.

I am aware of the T series fan problems after searching this forum, so there may be no "fix" for this either, if it is even a problem. Since it is rather noisy, are there any ways to turn it off?

Should the CPU get hot on automatic control with AC power? A diag. utility shows a 33MHz CPU with no load, which obviously should not cause any real heat...
Could an ethernet card draw heat up the insides enough to warrant venting?

Thanks for any thoughts.

Did you try a BIOS-Update?

Do the 600 has an embedded controler? If yes, did you try a Update, too? EDIT: No it doesn't

look here if this may help you: http://www-307.ibm.com/pc/support/site. ... idate=true

Thanks for your reply and idea.

The BIOS is updated already to the latest version...but back when I switched, it did not appear to affect the performance of the fan.

I tried watching the CPU temp using various CPU Temp monitoring utilities, but none of them could display the sensor output--apparently none could find the sensor. There was only one sensor they found, my HDD. That was at a nice 33C constantly.

Has anyone been able to monitor their CPU temp successfully? With what program?

Note: I cleaned out the fan, though it was not very dusty, so it is not clogged ventilation.

My thinkpad 600x has just started doing the same thing. The fan will come on and it just will not turn off. What is worse is it turns on at full speed which is actually quite noisy. Usually the fan but rarely came on and when it did it was so quiet you didn't even notice!
Mine has latest BIOS as well . . . very strange!

Wait...so you're saying that the 600 series fans actually should have varying speeds?

Hmmm, maybe it was like that once. Really, I don't recall.
For me, it is now either totally off, or at full speed.


So a basic question:
Does anyone have fans that sometimes ventilate at lower speeds, and is it obvious that it's not fully on?

Or are the fans supposed to be either fully on or completely off, as is the case here?

Any thoughts on how to fix this?

Paul

on my 600 the fan is running on various speeds, right now somewhat in between high and off, its not noisy at all, the only time it runs on high speed is outside in the sun (oops ) and shortly after turning on whenever you can enter the BIOS but the it goes down in speed and after a minute it shuts off. i have the latest BIOS (IBET54WW) on a model 2645-450, which has a mobile pentium II 300MHz, i assume that its not getting hot enough to run on full speed fan all the time

Ah, so they SHOULD run at various speeds. Dangit! That's what I need!


Yep, your BIOS is the latest. Apparently yours has no problems...

My model is 2545-4AU, and have BIOS INET36WW, which is also the last one...they'll never release another.

Anyone have ideas on how to get this fan back to variable speed?
Can the fan module break, and be replaced?

I have a new super quiet hard-drive, one that I can't hear no matter what I try (in the rare times the fan is off, I mean), but can't take advantage of peace and quiet with a blasting fan on constantly.

It's just really loud! Like a desktop:(