Messages in this thread | | | Date | Wed, 13 Aug 2008 17:45:07 -0700 | From | Jeremy Fitzhardinge <> | Subject | Re: 2.6.26: thinkpad x60 is cooled passively |
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Henrique de Moraes Holschuh wrote: > ThinkPad fans have a overdesign range of about 2x, they almost never stop > because they're too old. Clogged in dirt, on the other hand... a clogged > fan often spins FASTER and cools less. > > Want to see how much your fan has as far as a safety margin goes? use > thinkpad-acpi to measure RPMs in level 7 and also when you switch PWM off > (i.e. set it to 100% duty cycle). Mine gets faster by 1500RPM or so that > reflects the extra torque the EC can apply to get the fan to run at the > speed it wants it to. > > But the thermal sink interface to the CPU and GPU are sometimes crap [when > compared with the quality of the rest of the machine]. Open it, remove the > crap, and replace it with a very high quality compound. Dependin on > ThinkPad model, you also need to repair thermal sink design defects to make > it fit properly (read: press really tightly) on all chips.
Yes, this seems like a widespread and chronic problem with these little Thinkpads. I've had both an X31 and X60 go bad this way, and a friend has had his X60 fail twice. A pity given how nice the rest of the machine is.
J
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