Was out last weekend and all of a sudden my unit quit showing depth. I had depth from my ls-1 but now got no depth on either. I tried a different unit and same results. It will show depth every now and then but shows the - - - most of the time. I tried editing the overlay (delete/ re-add), made sure it was on local, etc. I can hear both transducers making noise when out of the water. I find it hard to believe that both transducers go out around the same time. Anyone experienced something similar or suggestions on things to try?