[sdiy] Need help reading a schematic

[Chromatest J. Pantsmaker]

I don't see any power regulators in this pdf.  What regulators are in the
unit?  I see +/-15 and +5 supplies being called for.  Is it regulating
a +/-18 supply into those three voltages?  How many leads are on the
transformer currently in the unit?

(non-switching) Power supplies are generally fairly simple to reverse
engineer.  I'd start with the regulators and work back to line voltage from
there.

On Wed, Aug 12, 2020 at 8:30 AM Jean Bender <lofideadbeat at gmail.com> wrote:

> Hi !
> I have a dynachord pdd14, but its power transformer is no more
> working. I can't find out its properties, neither the whole gear
> schematics.
> I have only the one attached here.
> Could somebody help me finding which kind of power transformer i
> should use ? I think somethink like 220 to 18 &12V should be ok, but
> not sure..
>
> Thanks per advance !
> J.
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