I have a problem... I have a Fender Bassman 200. I play a Lakland 55-02. There are times when the sound/tone is GREAT. There are other times (No setting changes) that the sound/tone fades in and out and will eventually cut off while I am playing a song. I have found that if I pull the "pot" on the volume knob (of the bass) and push it back down the signal comes back full. I have used an Ampeg and SWR in the past and this never happened. I use a SWR to practice at home and nothing like this happens. I assume it is an amp problem. Anyone have any ideas?