I have very little sound coming from the -51 sound board. I've adjusted the pot on the board up and down but it does not get any louder. So I thought that the amp might have been bad so I took a spare TDA 2002 and replaced it. Nope, same issue. I have a cap kit coming but I'm pretty sure that will not have anything to do with the sound.
I also looked for another (remote) pot in the cabinet, but didn't see one. What am I missing?