Whenever I have my trolling motor in the water I get a straight line on my sonar at 17ft of depth. I'm pulling my hair out trying to figure this one out! It's not typical interference that you would see such as vertical lines, it's horizontal, as if there was a fish or something at 17ft. just constantly sitting underneath the transducer mounted on the transom. Here's the setup:
1. Have changed out old MG TM to newer Xi5 MG, swapped out old Lowrance LMS-22c graph and ducer on the transom with new Elite Ti2 and 3n1 ducer on the transom. None of this has helped.
2. TM runs off two batteries on the port side bilge area with leads running up port side gunnels to the bow. Sonar and everything else including big motor run off starboard battery in the bilge. Sonar has it's own independent leads going straight back to the battery for power and for ground. Starboard battery shares ground with TM batteries (for easy jump starting.)
3. The Xi5 TM turns on as soon as you lift it to dunk it in the water. I verified today that it only does it when the unit is in the water. If I tilt it far enough to turn on but don't let it in the water, there is no issue. But as soon as it hits the water the anomaly appears on my sonar. Running the propeller or not has no effect; it's still there.
4. I'm new to downscan/sidescan etc., but it appears only on my 2d sonar, not my downscan at all nor sidescan. What could this be???
Reply With Quote
Originally Posted by Rip Bass
