Still having trolling motor interference

Installed the ferrite that HB sent me. Installed new power connections to Helix just to make sure. Trolling motor is a 2011 model and must not have the fuse everyone mentioned. All wiring has always been from cranking battery. STILL having interference. Looks like I'm gonna have to try running another ground as someone suggested. I saw a video where a guy ran a ground wire from the negative side of his trolling motor down the shaft to the hose clamp on the motor. Might try this or an extra ground from cranking battery. Also remember this unit worked fine for several trips then suddenly got problematic. Any other suggestions????


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Originally Posted by feeshrman

Installed the ferrite that HB sent me. Installed new power connections to Helix just to make sure. Trolling motor is a 2011 model and must not have the fuse everyone mentioned. All wiring has always been from cranking battery. STILL having interference. Looks like I'm gonna have to try running another ground as someone suggested. I saw a video where a guy ran a ground wire from the negative side of his trolling motor down the shaft to the hose clamp on the motor. Might try this or an extra ground from cranking battery. Also remember this unit worked fine for several trips then suddenly got problematic. Any other suggestions????


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Chris ,
the ferrites that HB has sent you and any others you have installed ??? can you tell me you tell where they are installed meaning on which wire ( power leads,transducer,etc.) and how wraps do you have on the wires in the ferrite ??? you can either do in this post or in a PM !!!

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Originally Posted by strmwalker

Chris ,
the ferrites that HB has sent you and any others you have installed ??? can you tell me you tell where they are installed meaning on which wire ( power leads,transducer,etc.) and how wraps do you have on the wires in the ferrite ??? you can either do in this post or in a PM !!!

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Sure. I have a built in noise reducer that came with the power supply to the Helix. The one that HB sent me is for the transducer cable. I wrapped it five times.


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I have also tried resetting to factory defaults.


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Originally Posted by feeshrman

Sure. I have a built in noise reducer that came with the power supply to the Helix. The one that HB sent me is for the transducer cable. I wrapped it five times.


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the Helix cable should be good then !!! now on the transducer is the ferrite big enough to get another wrap or 2 they recommend 6 or more the more the better !!! and by chance do you have this unit network with another unit ???

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Originally Posted by strmwalker

the Helix cable should be good then !!! now on the transducer is the ferrite big enough to get another wrap or 2 they recommend 6 or more the more the better !!! and by chance do you have this unit network with another unit ???

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I can try but it was getting kinda tight. Do you think I could double the cord and pass it thru the ferrite multiple times? The way I have it now is passed thru the hole again and again using the end of the cord that plugs into the unit. The fifth pass thru was a tight squeeze. No, I do not have this unit linked yet. I do have the capability but it is not linked at this time.


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forgot to add this to my post !!!
YouTube

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Originally Posted by feeshrman

I can try but it was getting kinda tight. Do you think I could double the cord and pass it thru the ferrite multiple times? The way I have it now is passed thru the hole again and again using the end of the cord that plugs into the unit. The fifth pass thru was a tight squeeze. No, I do not have this unit linked yet. I do have the capability but it is not linked at this time.


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no you can't double the cord !!!! the way you have it now is correct !!! do you have a place to get another ferrite big enough ??? if not send me you mailing info in a PM I will send you one !!!

Feesh,

ScottV stopped by the other day and we were talking. He mentioned interference that was driving him nuts. His fix was to disconnect the on board charger from the cranking battery while fishing. Apparently, the isolation between the banks failed and was letting interference through the charger. This way, the trolling batteries and cranking batteries are completely detached from
One another. Dunno if that helps in your case but I remember on the other thread u said it used to never happen but all of a sudden it started on you. Might be the charger letting the interference through.

Wannabe...


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Originally Posted by Wannabe...

Feesh,

ScottV stopped by the other day and we were talking. He mentioned interference that was driving him nuts. His fix was to disconnect the on board charger from the cranking battery while fishing. Apparently, the isolation between the banks failed and was letting interference through the charger. This way, the trolling batteries and cranking batteries are completely detached from
One another. Dunno if that helps in your case but I remember on the other thread u said it used to never happen but all of a sudden it started on you. Might be the charger letting the interference through.

Wannabe...


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I saw a YouTube video where that was the very issue, forgot about it till you mentioned this. It will be easy to disconnect and find out. I will try that tomorrow. Thanks


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Had interference issues with my old terrova. Jumped thru all the HB hoops, nothing worlked. Drilled a hole in the skeg and grounded it to my negative coming from the battery. Problem solved,

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Originally Posted by Boatbottom

Had interference issues with my old terrova. Jumped thru all the HB hoops, nothing worlked. Drilled a hole in the skeg and grounded it to my negative coming from the battery. Problem solved,

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Did you drill the skeg of the trolling motor?


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Originally Posted by Wannabe...

Feesh,

ScottV stopped by the other day and we were talking. He mentioned interference that was driving him nuts. His fix was to disconnect the on board charger from the cranking battery while fishing. Apparently, the isolation between the banks failed and was letting interference through the charger. This way, the trolling batteries and cranking batteries are completely detached from
One another. Dunno if that helps in your case but I remember on the other thread u said it used to never happen but all of a sudden it started on you. Might be the charger letting the interference through.

Wannabe...


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Tried this today and it did not work for me. Thanks for the info though. Will have to try something else.


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I did the ground to skeg, ground from negative on trolling batteries to electronics battery. Nothing worked and hummingbird was 0 help. My problem was power cord from trolling motor was laying on power supply for front fishfinder. I separated them and interference left until I hooked up NMEA 2000 now it’s back


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I’ve tried most every suggestion with no improvements. I did find this dent on the underneath of my transducer. It was where the cable had pushed into the backside a little. Do you think this could be the root of my problem? Attachment 342723the cable was flattened just a bit but no visible damage otherwise


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What transducer do you have?
I have a couple extras. You’re more than welcome to try them and see if they make a difference.


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I started getting interference on my Helix 9 DI and after very close inspection I found a very small cut on the cable just above the transducer that was caused when I bumped into something with the trolling motor. The cable was against the clamp and when it got bumped it made a small cut in the cover that was very hard to see. I replaced the transducer and cable assembly and it fixed my problem. Good luck with yours.

Chris, I was reading this post and may have missed this but is the only time you get “noise” is when the trolling motor is running and the display is clear when the trolling motor is off?


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Originally Posted by RustyJig

Chris, I was reading this post and may have missed this but is the only time you get “noise” is when the trolling motor is running and the display is clear when the trolling motor is off?


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Yes


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I have been following this post to help solve the interference problem on my Garmin. I talked to Minn Kota tech this morning about a nother problem with the propeller shaft bushing and I brought up the interference problem and his suggestions was that choke in the beginning of this post. I have never heard of one before so my question is where do I find one to buy to see if this solves my problem.

YouTube

Could it be your on board battery charger like this guy’s?


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Originally Posted by RustyJig

YouTube

Could it be your on board battery charger like this guy’s?


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No. I disconnected the battery charger and still had issues. I've watched every video on YouTube and still have problems


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Dang that really sucks none of the suggestions have worked..... i had issues and the ferrite ring fixed mine. Good luck, be curious what fixes your problem


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I’m guessing your transducer is attached to the trolling motor? If so have you unmounted it and moved it and its coax as far away as possible to see if that helps? And just a thought, have you switched the unit to demo mode and turned the trolling mtr on to see if there is any interference? Then disconnect the transducer cable from the head unit and turn the trolling mtr on. That might tell you if your interference is coming through the power cable.


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Think I got it. Had a friend bring by his spare transducer and hooked it up. Everything worked good. I then remembered seeing an indentation on the backside of the transducer between it and the motor. I thought there was enough room under it for the cable to cross without crushing. Apparently not. This explains why it did not show up immediately after installation. It probably took a little while for the protective sheathing to be compromised. In theAttachment 343050 pic you can see the indentation and maybe see where the cable is flattened ever so slightly. Thanks to everyone here for all the advice and help, especially strmwalker. Also thanks to Dee F for the offer of your spares. One of my local buddies had one so that saved me much time and trouble. Anyhow, here is the pic and I hope this may help someone else down the line.


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Wow. That was a tight fit


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Originally Posted by RustyJig

Wow. That was a tight fit


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Yes. Apparently you have plenty room if you let the cord lay next to the edge and around to the groove on the upper left side of the pic. My mistake was crossing the transducer to the groove on the lower left. I wish Humminbird would have noted that in the instructions.


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I know when I mounted mine on the transom the location where the cable entered the transducer was at the rear of the transducer rather than next to the transom which was not a good engineering design. It left a bout a three inch loop of cable over the transducer just waiting to get hooked on something. Glad you got yours fixed.


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I hope that fixes it


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Originally Posted by feeshrman

Did you drill the skeg of the trolling motor?


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Drilled a small hole thru the skeg used a small bolt and nut to hold the wire ran it up the groove on the terrova and grounded to the main negative coming from the battery