following up a message from Tom Walker to Jim Holsonback:

-> There are devices made and sold which purport to be an "ATX Power Supply
-> Tester."   I haven't used any of these, and do not know how valuable
-> their apparent test results may be wrt any kind of "real PS testing",
-> which I tend to think would need to be done with loads attached which
-> were reasonable approximations of what might be required when the PS is
-> attached to a "real" mainboard,  drives, and etc.

 TW>  They give you a ball park test that proves the Voltages are within
 TW> specifications. As far as capable of full loading it dosne't do
 TW> that But if with the 5 Volt supply loaded and the rest of the
 TW> voltages are correct most likely the PS is GOOD.

I was in a store today that had lots of computer junque,  and saw one of
those testers the article which you pointed to had a picture of...

It looked a lot less impressive in person.

I don't see how it's going to decide that the voltages are good,  etc.
unless there's a lot more in that little box than they let on.  Basically
what it said on it was to disconnect all of the other loads (I guess
meaning drives, etc.) and connect the tester,  apply mains power,  and push
the button.  If the green light comes on it's "good".

I dunno,  even though it wasn't all that expensive I don't think I'm
inclined to get one.  

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