Sega-Naomi

Hello all I had my nnc on earlier and had disconnected the audio and video from the mobo to try connecting another source. I then reconnected and the monitor stayed blank with no audio too. I have tried switching on and off to reset and checked all connections but no joy!!! Any help will be gratefully received. Thanks :smt009 :smt009 :smt009

Is there a reason why you wanted to connect to another source? When you connected to this other source, what happened? These questions might have a clue as to why this happened.