I have the repair job on 3 dc/dc converters, worth a lot, but very
awkward. They have a switched transformer feeding 3 further switched
stages (+24VDC in , +/- 15V out, &aux supply). Some problem fed 24V back
up a +15V line. I have removed all visible shorts and faults, and still
the input switched stage will not run, so the second 2 receive no power.
I have 2 questions:
1. Why - what's it thinking? How does it know the outside supply
is/was buggered?
2. Any ideas on this thing in the middle of this pcb. It looks
like a pcb 'sandwich transformer', and has loads of connections
off the pins underneath. The black part in the middle is ferrite
http://homepage.ntlworld.ie/e-tronic.genius/smpsucard.jpg
TIA
--
With best Regards,
Declan Moriarty.
--
Author: Declan Moriarty
INET: [EMAIL PROTECTED]
Fat City Hosting, San Diego, California -- http://www.fatcity.com
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