I just bought a 08 Sabre about a month ago. I went fishing yesterday and my front depthfinder started acting crazy. It is a Humminbird 717. When I first turned it on it would not show a steady depth. The depth number was constantly bouncing around by a couple of feet and the temperature number was flashing. Although I have not had any problems earlier running both graphs at one time, I turned off my console unit just to see what would happen. The unit on the front started working for a little while but then I looked down and the depth was on 1ft and the temp reading was 20 degrees. I turned it off and back on but it showed the same reading. There is no transducer on the trolling motor so I am assuming it is mounted in the center of the boat. Is that correct? My console unit is the same type of unit, a 717, but it was working fine. Any ideas of what to look for? Any help would be appreciated. Nothing more aggravating then having problems out of something brand new.