I can’t figure this out. My lowrance lcx 38chd only reads the bottom, bait, wrecks,etc… when my motors are not running. turn one or both of the motors on it stops printing. Obviously some interference, but everything has been fine up till now. Any suggestions other than buying a Garmin?
Check all your transducer cable connections to make sure they making good contact by unseating and reseating a few times. Having a poor connection can cause a weak signal that can be overwhelmed by the noise of the engines. If you have the boat out of the water and turn on the sounder you should hear the transducer clicking if your standing next to it.
Also, have you had any work done on you engines. New plug wires perhaps. Solid core, non-suppression wires will cause problems with radios and electronics.
Lastly, you may want to call Lowrance. They probably can help troubleshoot.
Iain Pelto
Edgewater 185CC “Jumpin’ Bean II”