Blackstar HT50 Club 50 schematic

[Nyqusit5]

Heyup,
I have a Blackstar HT50 here with a very low output. The OP stage is fine, the problem seems to come from the stages before the OP valves. Since this amp is chock full with opamps and transistor on a double sided board, a schematic would be of great help to repair this unit.
Anybody has got it? Please?

[fabiofubeka]

Hello nyqusit5,

I also have same problem with HT40. Gave problem in IRF830. I replaced them and still remains without power output. :/