ADAM Active Studio Monitor schematic diagrams help

Gentlemen,

in my workshop I have these active S1A "Professional Studio Monitor"
loudspeakers for repair. The amplifier is defective. Resolved, this is an
ADAM schematic collection now.


A diagram of this module would be useful. It is made by Hypex of the
Netherlands, no designation on it but date 10 Jul 2003. It carries a vast
number of NE5332 ops and two TDA7294 power amps, one LM339 and
one TL074 are also visible. Should be manageable to repair, but all traces
and joints are very small - doesn't help my eyes.

The Adam company which is in Berlin says that they don't have any
documentation and can not repair it. Since many of these were sold
it would be good to have them fixed in the true sense of sustainability.
I suspect that other people have problems with the amps also.

I understand that the head of R&D of Hypex is also around in this forum.
Will he be willing to assist?

Any help is highly appreciated, thanks.

EDIT: Diagram for S1A is in post 10.

Diagram for ADAM P33 (UCD-Version) is in post 152.
Schematic for ADAM P7 is in post 12,
Service manual for ADAM P 11 A UCD see post 154,
P22a manuals are in post 155
ADAM S2.5A and S3A schematics added in post 89 and 90
Model S1A (and others) transformer mounting precaution in post 19.
Model F7 is in post 149
ADAM S3XH
Service Manual is in post 153.
 
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Faulty transformer mounting in S1a (and others?)

In model S1A the toroidal mains transformer is squeezed between wood
wall and supply capacitors and mounted with far too little rubber material.

Transformer burnout can happen because of pressure on the windings.
Original spare is not available.

I recommend to have a look at the transformer mounting and add more
soft material on bottom and maybe on top of the xformer also to prevent
an insulation failure and burnout.

This precaution may apply to other ADAM studio monitor speaker models also.
 
P-22

In model S1A the toroidal mains transformer is squeezed between wood
wall and supply capacitors and mounted with far too little rubber material.

Transformer burnout can happen because of pressure on the windings.
Original spare is not available.

I recommend to have a look at the transformer mounting and add more
soft material on bottom and maybe on top of the xformer also to prevent
an insulation failure and burnout.

This precaution may apply to other ADAM studio monitor speaker models also.

This applies to models P-11 and P-22 also (at least).

In switching amp modules from Hypex, like that used in ADAM P-22,
the caps are too close to heat sinks and need "frequent" replacement.

I found a source for cheap mains transformers (Hypex will not help).