21 Apr
2006
21 Apr
'06
12:12 p.m.
Hi Tony,
thanks for your previous reply.
I've sort of fixed it.......
The power supply is repaired (two new input side smoothing caps,and one
diode). It is of a strange hybrid design, with a chopper on the primary side
of a transformer, but no obvious feedback for regulation, then on the
secondary side, a second SM unit for the 5V line, and two 78xx type
regulators for the 12V rails.
Th remaining fault is within the soldered up filter / overload trip /
voltage selector unit, which has an open circuit live line. It seems to be
special to the Decserver (I had a spare from a scrap DELNI, but it is
subtley different), so I'll have to wait for another to show up.
Once again, thanks for your help
Jim.