MN100-2 gauge not reading consistently

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum southerncross,

Please excuse this late response to your thread. Based upon the symptoms reported and actions taken, it appears that the transducer is failing. This may be verified by testing the hull transmitter with another transducer which has temporarily suspended over the side of the hull. When performing such testing, the depth of the water must be at least 3' beneath the transducer.