Melos 400 restoration project - need help (unaltered reference needed)

[illuwatar]

Hi everyone - haven't been here for a while... but now, I need some help from the pros here.

I'm working with restoring two Melos 400 monoblocks for a friend that bought them for a very low price. The catch was that they were non-functional. Above the normal restoration procedure (replacing electrolytics, power resistors, sockets and obvious broken parts), I have to work out the gremlins in the system. It would be fine if the amps haven't been altered by the previous owner. All over the thing, I can see changed resistors, added caps, replaced MOSFETs and cut traces... even wrong type of input stage tubes was installed so I suspect the input stage have been altered (additional parts seems to have been added around the tube socket).

The problem is that I have no reference to follow, so I don't know what changes are done by the user and what are done by Melos (if they even did these kind of changes). And without any schematics, it is really a guessing game. So, if there are someone out there with the same type of amplifiers that are kept in factory delivered configuration - I like to kindly ask for some good pictures of the PCB, both component- and solder side. That will do as a reference to see what should be there and what not. Maybe it even could help me to reverse engineer the thing...

Thanks in advance...

[amacrine]

I have a schematic i can email to you. you can email me at flannery@berkeley.edu

[barda]

Originally Posted by amacrine

I have a schematic i can email to you. you can email me at flannery@berkeley.edu

hello i have some problems too with my melos 402 gold monoblocks amps and my melos 333 plus pre, can you send me the schematic if is that possible and to me?
Thank you very much in advance