Report "I have a Eagle Fishmark 480. Last year it worked fine. Now it takes a long time to find bottom depth when I first turn it on. When it does it will stick at 2.8 feet. It has the most problem with 5 to 10 foot depth when in auto range. It will read for a while and then go back to 2.8 and the depth bar will read 0-5 feet. If I switch to manual depth range of 0-10 I can see the bottom structure but the depth reading will remain at 2.8. I'm guessing it's the transducer since it sat out in 30 to 40 below weather last winter. Has anyone else had these problems? I have same problem. Changed transducers twice but problem starts again"