rocknroller
Active Member
Have roughly 19-23vdc at both speaker left and right outputs. See block diagram and amp schematic below. Pulled and tested Q11/Q13 tested just fine. Thought maybe C17 at pin 11 was leaking though it tested fine. Replaced (both channels) no change. Maybe the C6/C7 2200uf caps off pins 9/10 though tested fine too. Replaced (both channels) no change. Oddly saw 5 volts across those BTW. 0.5 ohm emitter resistors all good. I'm not seeing how 23v is getting out to the speakers. Anyone?