Did a new unit fix this? I have a gen2 and gen4 with this issue.






QUOTE=huntersdad;4171826]I ended up sending the unit off to Hummingbird and they said it was a bad circuit board. However when in side scan, certain presses of the cursor causes distinct lines to show up on the screen so I'm not sure if that is a unit issue on going or if it's still interference. Another thing I noticed too, When I take the water column sensitivity down to around -2 to clear the screen I get bits and pieces of images where the bottom touches the water column. That looks like miniature sticks or weeds, it last for 50 to75 feet in distance and then goes away. I know this can't be anything on the bottom because I am running the center of the channel. Usually happens when I'm in water over 12ft. I'm just not certain if that is particulate not being filtered out or if it's just a unit problem

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