1.8 Vdc (roughly) on both square pads of HF & LFO LED side.
While I was in there, measured resistance on LSR side of both and there is major differences in values.
everything set in middle position (12:00) except volume
LFO pulses to ~ 1. Kohm
HFO pulses to 24 ~ 25. Kohm, would this value not allow any signal to pass or is this still part of the control path?