Well when you say they are dead, its probably just capacitors, unless they
have been abused of course. My main problem with modern supplies are that
they are switch mode. Firstly unless very well designed they produce massis
of interference both down the mains, and radiating, and often there is a
residue actual on the DC as well. I'd be tempted to visit somewhere who
sells to Ham radio people, like Martin Lynch or Radioworld, or there are
several others, as they are more likely to know of gotchas on individual
supplies than than your average Ebay cheap Chinese box shifter.
Brian

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This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please
Note this Signature is meaningless.!
"T i m" wrote in message
...
I have a couple of linear PSU's (Weir, both 30V-2A, 15V-4A) but they
are both old and are now non-functional / iffy and I was considering
something newer, lighter, smaller and with twin digital displays (on
the Weir's you have to switch between displaying V and A).

There are loads over the normal suppliers but I wondered if anyone
here had got something reasonably recently that they could recommend?

It's for general use, (temporarily) powering 5/12V things, charging
the odd battery and the like.

A 10A capacity might mean it can batter handle a 5A output, quieter
the better (some use small heatsinks and small fans) and ideally under
say £100?

I did look at kits (good to know you have the cct diagram) but that's
probably not best done with a SMPSU and linear stuff also seems to
require large heatsinks and heavy switching devices, all taking extra
time to source/ build (unless a complete kit with case / hardware
etc).

Cheers, T i m