One of my cubes has shut down - I happened to be sitting right by it and heard the relay click.  Red light and bottom pwr light are dark, fan twitches but does not spin.  I've swapped in a power supply that has been running two other cubes, and I get the same symtpoms.

I opened it up and checked the board - I see no evidence of overheat.  I shorted the two power relay leads and all the lights come one, but with no fan I'm not inclined to run it for more than a few seconds that way.

Is it possible that the fan is just bad?  I don't have a similar one to swap in tonight.
While preparing to order a fan, does anyone know what RPM the stock fans run at?  I see another post about a 2900 rpm 90mm fan, but I'd rather not have that noise level.  I guess more importantly, does anyone know what RPM the device wants to see?

Other thoughts about what could cause this?

Thanks in advance

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