Help PMH3000 Behringer

[peterschrott]

Hello together,

is someone out there who could help me to fix a bad pmh 3000.
Unluckily I donīt have any schematics, who has some ?
As I already read in this forum, the Behringer Service do not hand over the service manual.
The symptom :
The display of effect section only reads D2.
The amp seems to have not enough output power.

I would appreciate any help
best regards
peter schrott