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I have a 1998 258 and the depth sounder began malfunctioning last fall. The display unit on the dash goes blank on a regular but unpredictable basis. Could the problem be with the transducer? How would I go about determining the cause of the malfunction? Any help would be appreciated.

I am tempted to simply upgrade to a GPS chartplotter/fish finder combo unit but I would rather spend $ on gas.

Steve

Hi Steve,

The problem is likely the in-dash unit. I had to replace mine last year. If your transducer was bad the sounder would probably give zero or erratic readings, not go blank. I put a humminbird in-dash unit in and it works pretty good. I also have a Lowrance LCX-19C GPS/Plotter/Sonar unit so I added a transom-mount transducer that also has a temp sensor. The combination of both units comes in handy and gives a bit of fault tolerance...

Joe

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1998 278 Vista - Twin 4.3 GLs, Kohler 4KW Gen, AC/Heat.
1999 Yamaha Waverunner SUV
2003 Yamaha Waverunner SUV w/MR-1 HO conversion