Hi had bad humm out of Left channel and followed advice to overhaul it with parts described above.
In the beginning the L channel transistors run VERY hot all of them. I measured collector voltages accross q9 and q11. Q11 collector voltage was way out at 42...45V. Tried to adjust and no reaction at all only would run substantially hotter to the point of blowing the fuse. After that I would place all the trim pots back to the paint mark and was able to play it. After replacement of components, the L channel is completely silent 0db at any volume setting and it doesn't even pick-up cross-talk from Right channel. Is this component 'menu' correct?
In the beginning the L channel transistors run VERY hot all of them. I measured collector voltages accross q9 and q11. Q11 collector voltage was way out at 42...45V. Tried to adjust and no reaction at all only would run substantially hotter to the point of blowing the fuse. After that I would place all the trim pots back to the paint mark and was able to play it. After replacement of components, the L channel is completely silent 0db at any volume setting and it doesn't even pick-up cross-talk from Right channel. Is this component 'menu' correct?