Okay fellas, I got a problem with my units. Got a gen 2 touch nine and seven linked together. I will be fishing and my sonar will just freeze up. Screen won't move and it will show depth as ---. Does it on downscan and 2d. If I wait long enough it will come back on. If I change the screen to full GPS and back most times will fix it. By the way the GPS never freezes and I am always running it on split screen. Thanks for any help