Last year, my factory depth finder on my 2005 Moomba Outback would cut out from time to time. The power would shut off for no reason. I could pound on it and sometimes it would come back on. Now this year, it's not working at all. I checked all the connections and they look good. Has anyone had one just entirely crap out and stop working? I'm thinking it just failed and I need to buy a new one? Any ideas on what to check before I replace it? And just confirming...it's a 2" depth finder and does anyone recommend any replacements? Thanks!