My Digital RD418D 4kw radar is not working this season. I have checked the voltage at the unit and it is 12v or more. It appears to warm up, the motor turns for a second and then is shuts down. I have a C series C90 widescreen plotter which shows the No data error. When I selection "on" on the softkey - nothing happens and the "standby/transmit" key is greyed out. Please help.
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