Dead PSU - test-drb@ccmp.vtda.org

5 Jul 1998

Does that make the solution more complicated? There are about 20 little 
capacitors, packed like mushrooms. Are you sure it can't be anything 
else? BTW, if I later unplug it, the fan spins back up again. Maybe I 
could just disable whatever shuts the thing down? (I'm somewhat 
squeamish about spending two hours checking each and every capacitor 
with a hot soldering iron - that'll _really_ dry out my capacitors :)

...
 Aha... 2Hz....

Forget all we've said about mains filtering...

Sounds like the PSU is starting up, detecting a problem, shutting down,  etc.
...
 Start by testing/replacing all the output-side
electrolytics. They'll  be 
...
 1000uF-4700uF (I guess), connected (electrically) close
to the output 
connections, and have voltage ratings <25V. 

On the grounds it works OK off-load, it's unlikely to be any of the  other 
...
 capacitors in the unit...

-tony

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