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.

Are they both hooked to the same battery



Sent from my SM-G955U using Tapatalk

Quote:

---

Originally Posted by Lawnmowerman43

Are they both hooked to the same battery



Sent from my SM-G955U using Tapatalk

---

No, the Garmin is hooked to the cranking battery.

Sent from my SM-G930R6 using Crappie.com Fishing mobile app

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

Sent from my SM-G955U using Tapatalk

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.

Sent from my SM-G930R6 using Crappie.com Fishing mobile app

Is there a common on-board charger hooked to both batteries ...??

Rickie

what model? built in us2?

Yea there is a common charger and it's a Garmin 93sv plus unit. About 2 months old.

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.

Quote:

---

Originally Posted by RoughriverRick

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 ...

Rickie

I'll try that, thanks!

Sent from my SM-G930R6 using Crappie.com Fishing mobile app

Don't have that exact transducer, but I run a Garmin 7 up front on a Terrova, cut a piece of yoga mat and placed between transducer and TM.... helped a lot.

Sent from my Z983 using Tapatalk

Another thing to try which has fixed all my interference issues is run a ground to the trolling motor skeg and ground it to a ground of your starting battery. Any ground up front will work as long as it goes to the starting battery. I drilled a hole in the skeg and used a self tapping screw and then covered it in liquid Electrical Tape..

Thanks again guys. I'll do both tomorrow. I wont be able to try it until Saturday.