Fan, fan, fan... you can do it...

[erozsolt]

Photo of the microswitch - 25KB JPG, 6 sec over dialup
Schematics - 33 KB GIF, 7 sec over dialup

Be creative! Let you choose the noise level!

Edited by Moderator: That was a nasty shock to anyone on a dialup line. Don't post images in the forums without a warning in the subject line. Links only.

Sorry for the _huge_ images.

[RonS]

You should put a label on that switch: OVEN

[GoEatFood]

does that mean you could use it like an ezbake oven?? I always get hungry while doing work...

[danny_isr]

this forum should be called fan.com

[erozsolt]

No, it is not so dramatic.

If you read Intel's CPU thermal guide it says, that the unhealthy temperature is starting about at 75 C and temporary this temperature could be higher. Just have a look at mobilemeter's values for hardware thermal control. It says (for my Banias), that the shut down temperature is 93 C.

So, my solution, I have either mobilemeter or hmonitor running, and when I do some CPU intensive task I switch the CPU on. For browsing and writing is can run passively in adaptive mode with temperatures not higher than 40 C!

And just try a long-term prime95 on any ThinkPad T4x. Under warranty it could run as hot as 65 C, for any time you like, so this laptop has to bear temperatures like this for long-term. I think <40 C is not a problem.

Oh, yes, do this only if you like listening to quiet music. With an external USB hard drive, my TP has no moving parts!!!

[K. Eng]

How did you install that switch? Does the ThinkPad complain that the fan has failed if the switch is off?

[erozsolt]

OK, to be honest I wrote "Be creative" because I could'n take pictures while TP was open.

When I left the switch in off state it says: "Fan error". You can press the ESC button to bypass it or turn the fan on.

I just cut a PCMCIA size paper and sticked a microswitch to it with long wires. Than cut one of fan's wires and connected it to endings of microswitch's wires. That's all.