Been looked at by one supposed repairman and returned in a sorry state.

SMPS problem initially , but now could be more than that.
I don't suppose anyone has a schematic for this kit, may not be necessary
but just in case.
Local recording studio's favoured piece of kit , with no full modern day
replacement it would seem


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/