I used a company last year and they were great, but I just can't remember their name. I have a chartplotter/GPS problem I can't figure out. I have a HSB Raytheon series Radar/Chartplotter/Fishfinder that I can split on 2 screens. I get a HSB box error at startup and have no info going to my display. My radar and fishfinder work fine on both displays. I am not great on working with electronics. Thanks in advance.