I have a Raytheon/Raymarine HSB series radar, fishfinder, and chartplotter all tied into 2 displays. Anybody know a good electronics person in Hampton Roads Va or can help with the problem. I am getting a HSB box error message at startup. I have no chartplotter or GPS, it is not getting a signal. All my other items work, Radar and fishfinder. Any ideas and if it is something I can fix myself.