332c Lowrance

I have a 332c that loses depth and just flashes. Tried a different transducer but no luck. Any suggestions.?

It's shot! Had a 102C that did the exact thing.

When on the gps/map page then only the depth flashes. When on the sonar page the entire screen goes crazy and looks a tie dye picture. All the colors just melt together. From what I read on the osts, this particular unit had issues with moisture? Could this be an issue? I tried the unit yesterday on lake Michigan and it worked fine most of the trip, but then as we were picking up lines it started to read 2ft, when we were actually in 150 ft. The flashing of the depth occurs when we are running and trolling.

Does just the depth reain flash or the entire screen? If it's just the depth is it when the boat is only on plane or does it do it when it's going slow or stopped also?

check the angle of the transducter. mine did the same thing and it was the transducer was tilted back instead of down. Also would not read depth when on plane