For some reason my Aux Input A and B are not coming through the MAIN OUT. I had them and now they are gone. When I go into my Universal Control, I can see signal and I can lift the Fader (and moving the pot also lifts the Fader), but the Green knob stays at the bottom and nothing is actually coming through. I feel like this has to be something simple, but I can't seem to figure it out. Please help.
