RP, I don't have any idea what kind of unit you are working on, but on my 04 33V bago, passenger side, in the overhead cabinet, there is a small panel, white, aprox 1x2" that has a re-set switch on it, as well as a on/off switch in the vicinity, AS WELL as a 5 amp breaker. If these are present, check to make sure all are "on".. FWIW, on the face of the Bago supplied MagnaDyne radio, just to the left of the cassett slot, is a small hole, about the diameter of a med paper clip, that is a reset button.(and is labeled such) Insert something inert (sharp pencil is ok) into that hole, and reset that breaker..But...If your are not working on a similar MoHo, I don't have clue.

..rgr...