I have two Helix 7 SI CHIRP GPS G2 depth finders, one at the console and one at the bow. The one at the console is giving me trouble. I had them installed by a place locally that works on boats and sells them. I also had them put on a Minn Kota Terrova. I didn’t have any problems initially with the depth finders but when the TM was installed, I started having issues. I’ve tried numerous things. I know it’s not the transducer because I have two of the same transducers since I have two of the same units. I swapped them out, that didn’t fix anything. I know it’s not the unit because I put the unit at the bow at the console and had the same result. The units are wired to the cranking battery, the TM wiring is ran on the opposite side of the boat away from the units wiring. There was junk showing up at the top of the water column and would stay there regardless of the depth below my boat. If I’m going like 5mph, it’s there. If I speed up even more, it goes away but if I slow back down it comes back. I was told I needed a ferrite ring and so I put that on and it helped the image a little. But if I speed up this time, the depth would jump way up to like 53ft even if I’m in 4ft of water and the image would go to the top of my screen. Any suggestions on what I can do to clear up this image? It’s been a never ending problem it seems like.
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