The Daring Dufas wrote:
Jon Danniken wrote:

It probably depends on the fan. Some of the newer ones I've taken
apart have a thermal fuse in line with the run windings. If the fan
stops for a sufficient enough period of time, the solder inside of
them vaporizes off, and the fan no longer functions.


Excuse me, I couldn't help a double take when I saw: "the solder
inside of them vaporizes off". This is planet Earth not Mercury.
Perhaps you meant loss of lubricant?

The solder is what is inside of the thermal fuse, and when it vaporizes, the
thermal fuse goes open permanently and the fan is meant to be thrown away.

My apologies for not explaining that a little better first time.

Jon