IT"S NEVER the sand. Those issues are alway related to connections. It's not at the battery cause it's powered up and the temperature sensor in the transducer is also working. It has to be one of the pins at the unit or at the connector on the cable. Just as a reminder to reduce corrosion at connections, NEVER plug in the battery first, before the unit and ALWAYS disconnect the Battery FIRST. Also you should use dielectric grease at both ends of the unit connectors and at the fuse connections at it's housing.
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MARK ......... 2016 MALIBU X FACTOR, 2020 SOLO SKIFF (Fishing Kayak on Steroids  )
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