Klipsch Promedia 2.1 repair help

[dubwoofer]

I have a Klipsch promedia system that I want to get working again. The problem is the left channel amplifier output is stuck to the +25V supply voltage...unfortunately it took out one of the satellite speakers...

I found schematics here:
Klipsch Promedia V2.1 Amplifier Repair

I've tested all transistors out of circuit, all are good...zeners test good, ESR on the EL caps is fine... I've retouched all (i think) of the solder joints...

I'm stumped...what else can I check?

 

[sgrossklass]

What about the feedback network resistors, R7 in particular? There is no appreciable DC at the power amp input, right?

 

[dubwoofer]

R7 tests good. No DC at the input since I removed the amp assembly from the main unit.

 

[djk]

This is a stupid design (unless the schematic is wrong).

With no input ground the amp will slam to the rail.