I have 733's but no 992's, Iwill swap out transistors this evening.
Ok, standard questions re: static...
has it been thoroughly deoxited? all switches?
Both channels? NO? just one...
phono 1/phono2/aux affect it? no?
Stereo/mono affect it? no?
muting (-20db no effect?) ??no??
loudness no effect? ??no??
balance control affect it? no?
Volume control affect it? no?
tone on /off affect it? (off is a total bypass of the tone amp) no?
30hz filter in/out affect it ? no?
8khz filter in/out affect it? no?
BOTH 30hz and 8khz OUT affect it? (that's a total bypass of the filter amp) no?
looks like flat amp between the volume control and the output. After that the tone bypass and filter bypass eliminate all other active devices (but not the bypass switches).
Quick test is to swap Q5 & Q6 (2sk30aw)(repl:ksk30yta) and see if it moves
and then Q7 and Q8 (2sa725) (do you have any ksa733's or (ln)ksa992's?)
and see if it moves...
flat amp is behind the front panel and has volume control and a lot other panel stuff on it.
Mark I swapped Q7 and Q8 Static disappeared. is it possable it may have been a cold solder joint on Q8? I went back and checked DC Balance and Idle Current readings, all are fine. I will leave her running for a while and see what happens. Fingers,Toes and Eyes are crossed.
Careful checking those voltages one last time. I slipped once and had to start all over again :sigh: