Hi all, I have a Garmin 2010C GPS/Plotter/Fishfinder with a Fishfinder display issue. It works perfectly on all the other functions, but on the Fishfinder option it does not display the bottom and there is a spectrum of colours that appears on the right hand side as a side bar that should not be there. I haven't used it before so its a first attempt at seeing whether it works or not. I've checked the wiring and it's 100% correct. Would anyone on here have any thoughts as to what the issue could be? And is there anyone in the UK who can repair these items? Apologies if this is an unusual or inappropriate request.