Sonar MPH has Cut Out, and repair source?

I noticed that my sonar mph indicator is out. I can get the wheel to spin freely - - am I overlooking any quick fixes? I get mph on GPS’s, too, but I like to have everything working. ALSO: where can I get good service on a color Furuno sonar? I think I have damaged the screen by trying to clean it - - now I have some “ghost” gray schools of fish with me always. thanks.

“Fair skies, tight lines, and green numbers.”

how old is the unit?

8 yrs,I think - getting old…

“Fair skies, tight lines, and green numbers.”

start shopping for a new one, when they get older, they generally stop supporting them or offering service for them, except for some of the commercial units

yikes! I spent $500 back then!

“Fair skies, tight lines, and green numbers.”

Is the MPH problem with the Furuno unit? I have a spare wheel for Lowrance if that is your problem.

thanks, but it’s Furono.

“Fair skies, tight lines, and green numbers.”