Hey guys hope somebody can help me. Long story short I got a used GD 1710c Unit. My old one still works however I had a display issue. I have a VX one on my tower and the GPS antenna connects to that. I have a VX two at the downstairs helm and the only thing that connects to that is the NEMA cable to go to my auto pilot. I have a ETR transducer and everything connects to a Netgear ethernet hub. I also have a radar that connects to the VX2. When I connect to your new unit upstairs I get the sound or however I do not get the radar. The GPS is working as well upstairs. When I go downstairs the sound of works along with the radar however I do not get any GPS information. When I connect my old unit it works fine however I have no display upstairs LOL. I went through the installation manual in the menu however I don’t understand most of the Settings. I hope this is something stupid and could be fixed quickly. Please help