Yesterday, the screen on my Helix 10 bow unit started to fade and then it started spinning like a slot machine. I had it on GPS / sonar split screen and when it faded you couldn’t see anything. I had to shut it down and restart it and it was fine after that. The voltage was good, all batteries were at full charge. I sent this unit back to Humminbird maybe 3 months ago because the right side of my side imaging was blacked out and they repaired the circuit board and it has worked fine until the issue yesterday. My concerns are that it is under warranty until May 2020 and I may not be using it now until this spring so if there’s something going on I may find out to late. Any recommendations? Thanks