I have a Krell 200s that distorts and clicks loudly when played at low or medium levels. By "low or medium levels", I mean no level LEDs on, or one LED on intermittently. When I crank it to where it is too loud to stay in the room, the distortion and pops go away. So I've not used it much in the last forever. Do readers believe this is "bad cap somewhere"?
What I recall about LEDs at turnoff is that both channels of LED bias level indicators behave about the same, going off pretty quickly.