[CA] [CA11] CPT100 transducer troubleshooting

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum Peter,

Should the symptoms occur when the transducer is free of marine growth, locked in the down position, and boat is either drifting or operating a trolling speeds, then it may indicate a failure within the transducer within the MFD's internal fishfinder circuitry. If sending the transducer to Raymarine’s Product Repair Center to be bench checked / serviced, it is recommended that you additionally consider sending the MFD in as well to have it tested.