Fish finder maintenance

[seaslug]

After flooding my kayak various ways I find my fish finder (Garmin 160C) lights up, simulates, etc. but does not read anything.

I have cleaned, scraped, dried, sprayed with WD-40, etc. and still no go on 2 trips. Has to be in the cable or the power. I know when the battery gets low the FF still shows up but does not read fish.

Since the transponder is permanently mounted inside the hull it is not possible to take the whole cable and finder to another area to try.

Never knew there were so many ways to fill a Hobie without taking water through a crack in the hull.

Steve