Sperry Marine Echo Sounder Post author:Soren L. Schmidt Post published:26/02/2021 Post category:Renotronic Manufacturer:Part number:Failure description: Sperry Marine / L3 Communicatiosn / ELAC NautikES 5100-02 / 52 603 8002 / 526038002 Black screen Repaired and refurbished You Might Also Like Strömberg voltage regulator 14/12/2020 Pulse amplifier board 20/04/2020 PCB for jacking system 16/08/2018