Lowrance LCX-18C "depth flashing reading" Questions

depth keeps flashing zero...transducer seems to have a weak tic, can't feel the tic as before...is the transducer going out? can I trouble shoot somehow myself? I havew a Minn Kota trolling motor on a

...depth and were flashing between numbers and blank dashes. I have checked the transduser to see if it had been knocked up or if weed was caught around it but all looked okthe water I am using it in is ...

Eagle 640c Fish Finder dosen't read corectly. Start up normal, when on auto depth range and sensitivity gives me a normal picture as I move from shallow to deeper water. Once over 50 to 80 feet of ...

...depth indicator will only register 0.0 and continues flashing the number. The Lowrance is a LCX-17M. We tryed the Lowrance on another boat with a working transducer (106-72) and it still just flashed ...