I encountered an issue with the Furuno DS-50 speed log. The display unit started flickering and showing "000" on the screen at that time speedlog data connected equipment also not getting the speed data.To troubleshoot, I replaced it with another display unit, but the problem persisted. Upon opening the display unit and disconnecting the connector attached to the LCD, I noticed that speed log data was successfully transmitted to all connected navigational equipment. What could be causing this issue? Please advise.