Zapco Z600

[nonprof]

Hello again!

Please help this amp is mute state, no sound but has a rail voltages. I dont know what to do, I dont have schematic too...
If anyone has it kindly give me a copy.

Thank you...

 

[Perry Babin]

The two lower left emitter resistors look discolored. If they are, that channel is where I'd start looking for problems.

 

[nonprof]

The two lower left emitter resistors look discolored. If they are, that channel is where I'd start looking for problems.

The discolored resistors measured 0.4 ohms...similar to other