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Thread: Garmin 93 sv plus interference problem, help please...

  1. 02-03-2019, 08:36 AM #1
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    Default Garmin 93 sv plus interference problem, help please...


    I am having a problem with interference on my bow mounted garmin. It has a great picture when I am not running the trolling motor but sometimes it becomes unusable when the trolling motor is on. It comes and goes. I can be trolling along and its all good and then for no apparent reason it goes south. I have moved cables, wriggled cables, flipped it the bird. Nothing helps. Does any body have any ideas? The trolling motor is a minn kota 80 lb thrust and its pretty old. Oh and the garmin is almost new.
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  2. 02-03-2019, 07:10 PM #2
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    Are they both hooked to the same battery



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  3. 02-03-2019, 07:11 PM #3
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    Quote Originally Posted by Lawnmowerman43 View Post
    Are they both hooked to the same battery



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    No, the Garmin is hooked to the cranking battery.

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  4. 02-03-2019, 07:24 PM #4
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    My 73sv did the fuzz out every time I would hit the troller motor not sure what fixed it, after my step son wrecked my truck and the boat slammed into the tailgate it works fine, but I dont recommend that method. The Garmin folks are awesome when it comes to issues

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  5. 02-03-2019, 07:26 PM #5
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    Lol, dont think I'll try that. I did run a twisted pair power cable today and moved my transducer wiring. I guess we will see.

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  6. 02-03-2019, 08:37 PM #6
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    Is there a common on-board charger hooked to both batteries ...??

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  7. 02-03-2019, 08:59 PM #7
    acwd1950
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    what model? built in us2?
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  8. 02-03-2019, 09:15 PM #8
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    Yea there is a common charger and it's a Garmin 93sv plus unit. About 2 months old.
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  9. 02-04-2019, 07:23 AM #9
    acwd1950
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    what model of trolling motor? does it have a us2 built it? have you checked the fuse in the top of the trolling motor? sounds like its a loose connection in that fused wire in the trolling motor head if it has one.
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  10. 02-04-2019, 08:29 AM #10
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    Quote Originally Posted by RoughriverRick View Post
    Yea there is a common charger and it's a Garmin 93sv plus unit. About 2 months old.
    Interference can back-feed from TM - thru the charger - then to the head unit ...

    Remove the charger leads from cranking battery and test for interference ...

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