Powerbook G4 667, 18 months. Has run fine since purchase. The fan has
kicked in occationally, perhaps once or twice per months. Usually when I
inadvertantly blocked ventilation for some reason.

Since a couple of days this has changed. Now the fan kicks in after a
few minutes and runs full screaming speed after another few minutes
every time. I can make the fan slow down by lifting the keyboard and
blowing at the heat sinks a few puffs, but somehow I don't think that's
what the Apple designers intended for their users.

Anyone have any tips on how to restore the failed Powerbook cooling
system?

sincerely
Lars Farm


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