'Were it not'. Autocorrect snafu, gimme a break, it was 5.30 am when I posted it, and I was already heading out the door. And my phone's native tongue is Flemish.
After checking some dodgy wiring on the power transistor side of things yesterday night the bios voltage went up do around 0.05V. Let's say I have an 'adjustment range' now between 0.04 and 0.075V.
I wouldn't read to much into the difference between the bias transistor C-E and Q6/Q9, because the bias transistor measurement was a bit of and afterthought and not taken at the same time. Will do if required.
Incidentally, R21 and R30 are fine, even that botch repair I made on 30 is doing OK.
I'm trying to get a handle on how the left OK channel dropped by a factor 10 when I fixed the right one. How did I create a voltage devider (yeah making a sink, but where ?). I didn't touch left ! I think it happened at the same time that base wire worked itself loose.
I don't understand the sexy nurse babe thing but it sounds interesting ! AFTER I get this amp fixed
When the right channel base wire came off (which is a very bad thing to have happen) your bias goes to a very large and damaging voltage as you indicated above. Did you blow one or both of the +/-80V rail fuses when that occurred?