Been having problems with the display on my 1197. Took the unit to a buddies house, hooked it up on his boat and display looks normal. I borrowed his spare transducer, came home, set it on the deck and hooked into splitter cable and still had the display problem. Disconnected the dual beam from the splitter and still had problem. Connected the side imaging transducetr ( buddies sitting on the deck) directly into the unit and problem went away.
So Im wondering if the problem could be with the splitter cable? I dont have enough slack in the cable to plug my side-imaging transducer directly into the unit. Unfortunately its raining good right now so maybe this weekend I can try and get some more slack and validate. Does anyone think this is possible that the splitter cable could be creating some sort of interference, or seen this before?