I’m needing some help determining what the problem is with my unit. I have 2 helix 7 si chirp gps g2 units. My unit at my console was working fine then I put a Terrova on my boat and had to add a third battery. I’m not sure if there is electrical noise in the power to my unit or what’s going on but the unit started showing junk in the first ten feet of my down imaging. If I speed up to like 5mph it will go away, but if I slow down then the junk re appears. I thought the transducer was messed up so I swapped them out with the transducer on my other unit that I had and it shows the same thing. I thought the electrical noise was in my transducer so I put my boat in the water and plugged my spare transducer in, ran the wire on the deck instead of running it beside all the other wires to eliminate any noise, and put that transducer right beside the mounted transducer and it showed this same thing. I’ve called humminbird, they haven’t helped me. They aren’t sure. I have the most updated software and that didn’t help. If anyone has any idea what could be going on and has any suggestions please let me know, it will be much appreciated!!
