Originally Posted by
Cray
I had the very same issue as you with a 597 on the bow. Transducer was mounted on motor. I disconnected ducer, dropped motor so I could turn it on. While running motor I move ducer around and away from motor. Made no change. My power wire was like yours which is original. I called Humminbird and told them my problem and asked about getting the updated power wire with ferrit ring installed. They sent me a new power wire with the ferrit ring installed. Installed that new power wire and that solved my problem. Might give that a try. Sure can't hurt anything. By the way if you decide to run motor out of water just run it on low for short period of time then shut off for a bit so it dosnt get hot. Uses water to keep motor cool.