I have a 798 ci SI unit that was probably purchased and installed in the 2008-2009 timeframe. It has performed well over the years, but unfortunately, after the boat has sat for over a year, when I turned it on today to check it, I have a problem. The unit automatically enters demo mode (never did that before). When I switch to Normal mode it tells me the transducer is not connected. The boat is sitting in the shop on the trailer, but I never remember it saying that when it was trailered before. The unit otherwise functions and will lock in a GPS fix.

I've check the wiring and all seems to be intact. I've also checked the pin connectors at the unit and everything looks in order and clean.

Has my transducer quit on me?