Possible to fix a BA123 power supply?

From: Allison J Parent <allisonp_at_world.std.com>
Date: Sun Jul 26 18:38:56 1998

< Help? I have 2 power supplies for DEC BA123 boxes which
< no longer function. I suspect that in each case, something very
< simple has gone, such as the primary capacitors on the AC/DC

Don't ditch the failed supplies. They can be hard and expensive to
find. First failure mode on them is overheat due to failed fan. Usually
that takes the internal fuse. Open with care as the caps in them can
hold a lethal charge. Rare is the failure of the caps from what I've
seen. The high voltage chopper transistor or the input rectifiers are
more likely to be suspect.

Received on Sun Jul 26 1998 - 18:38:56 BST

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