Odd lines on sonar screen...
Went out fishing with a friend today in NPH and any time he was within 75 feet or so, my sonar screen would show a mess of random vertical lines. I'm guessing it's obviously some sort of interference, but is there a "reason" I'm getting this? Did I get bubbles in the transducer mounting glue or something?
His didn't have the same problem and units I've had before this wouldn't do this.
Any help would be great.
Thanks!
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