JIM HOLSONBACK wrote in a message to ROY J. TELLASON:

-=> ROY J. TELLASON wrote to JIM HOLSONBACK <=-

 RJT> But in any case,  the "5VSB" (5v standby power?) that's
supposed to be
 RJT> on pin 9 (purple wire?) should be there all the time,  right?  Or at
 RJT> least all the time that the PS switch is on,  right?

 JH> Yes, that is my understanding - it should be there as you say. 

 RJT> That's not there either.

 JH> Oops!  Not a good sign.  Maybe something got shorted somewhere or
 JH> caused some power surge which blew an internal PS fuse?

 JH> Just a thought - - FWIW, while bench testing multiple CDROM drives
 JH> and trying to hot-plug in power connector to them, I've sometimes
 JH> caused the testbed ATX PS to shut itself down,  but the PS
 JH> generally started working again after a few minutes cooling down
 JH> period.  The testbed has a good-quality PS - Astec as bir.  Maybe a
 JH> less expensive PS would have blown a fuse?

Beats me,  I know a little bit about how switchers are designed,  but not
the part about how they can shut themselves down and come back later... 
Maybe I can find some more info on it...

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