Cyde Weys wrote:

Okay, I did what you suggested and the fan in the power supply whirs for
a fraction of a second, does maybe one rotation, and then dies. This is
repeatable. So what do I do now? It sounds like the power supply is
indeed at fault.

Okay, I violated my own policy and opened up the power supply. I can't
see anything obviously wrong with it (not that I necessarily know what
I'm looking for). The fan isn't clogged with dust and turns very easily
even when I just blow on it. Anything else I should do before I get me
a new power supply?