Vintage Synth Repair

Hi folks,

i´m new to your group and want first to wish you all a merry 
christmas.

A friend gives me a moog satellite (as a gift). I know about "this is 
not really a moog and sounds awfull ...". But it is really vintage 
and i love that kind of stuff. In this case i need help. I have no 
idea where i can find some information to repair that thing. Any 
ideas? Has somebody expiriences with the satellite?

from Germany

Bijan Lor-Zade