I currently have an autohelm st50plus sounder installed on a Kirby 25. It’s been installed many years ago and has been running smoothly up until now. From what I remember, I was sailing close to a shallow area and the indicated depth
fell to 3.8 feet and started blinking. I adjust my course, didn’t hit bottom, yet after that incident the depth
was very inaccurate. A couple of minutes later it indicated a depth of 0 feet when it should have been around 20 feet. Now the screen
indicates “DEPTH: - -“ . I checked the bottom of the hull…no damages. I checked the wiring
and connections… everything seems as it was for the past couple of years. How do I reset the depth? Has this happened to anyone else? What should I do? Hope to hear back from one of you so that I could get back on the water!!