IBM 5155 Power supply schematics or info
Alberto Rubinelli - A2 Sistemi
alberto at a2sistemi.it
Tue Nov 15 15:34:53 CST 2005
> Alos check the output capacitors. A dried up one will cause all sorts of
> problems.
All the capacitors of this power supply were replaced, all semiconductor
tested, various control done ....
but the problem remain the same : the outputs are a few low , sufficent to
trigger under voltage protection.
With under voltage protection disabled, it work without problem with a hard
load.
Now: it's correct to adjust the trimmer R18 to obtain correct outputs ?
I'm not able to understand what i changed in this supply, maybe the sign of
the time :)
Alberto.
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Alberto Rubinelli Mail : alberto at a2sistemi.it
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