My problem is that My DVX 100A suddenly is no longer recording audio on channel 2. It appears as though the camera is picking up the sound, because the audio bar is registering, but you can not hear anything while you are recording and it is not on the tape during playback either. I have checked all other inputs. I have plugged a mic into input one and that registers fine on channel 1. I have plugged the same mic into input 2, and it will register and record fine through channel 1, but when I bump it to channel 2, nothing comes through. I also have checked the internal mic through channel 2 and get the same problem. I have both input switches on the front set to mic(not line)and my audio recording level for CH1 and CH2 are both set to the middle. Is there some other switch that I bumped, or is this a malfuntion. Help would be appreciated. Thank you.