Furano USA support-
https://www.furunousa.com/en/knowled..._at_furuno_usa
Give them a call, see what they say.
Be aware however, fish finders and other types of marine equipment after a time become "obsolete" in the eyes of the companies that built them, and they no longer support them with parts or service.. ran into it last year with a garmin color FF.. No longer serviced, or parts available, best of luck...
happens with cars, trucks, boats, outboard motors etc as well..
Remember its a "consumer electronics" device, and all the companies that build them want to sell you a new one, NOT fix your old one... bob
