IBM 5155 Power supply schematics or info

[Alberto Rubinelli - A2 Sistemi]

> I hav ereverse-engineered this unit (there is no official schematic in
> any of the manuals).

Great! I have plan to do the same, in nobody has already done :)

> Alas I have no scanner, so as yet there are no schematics in eelctronic
> form. But I will see if something can be done.

Thanks, thanks and more thanks !

> I've never had to repair one, but from what I remember it is a fairly
> conventional design.

In the past I've repaired two, but with very simple damage, one with the
output capacitors die and another with the auxiliary little transformer with
primary coil interrupted.
The circuit work around an old pwm controller, SG3524 of SGS Thomson.

Thanks

Alberto

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Alberto Rubinelli          Mail : alberto at a2sistemi.it
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