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#11217138 - 11/10/15 04:33 PM Transducer Shielding on Trolling motor
JWRid Offline
Pro Angler

Registered: 04/07/11
Posts: 607
Loc: Arlington, TX
I think I have a shielding problem for my trolling motor transducer. I run an Elite 7 HDI on my bow and every time I hit the trolling motor my screen has some "snow" clouding. This happens in the down scan and sonar screens. When the motor is off the screens are clear. The trolling motor is a Fortrex 101. Anyone else experienced this issue? If it is a shielding problem can it be corrected?

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#11217150 - 11/10/15 04:41 PM Re: Transducer Shielding on Trolling motor [Re: JWRid]
Brad Hardt Online   content
TFF Team Angler

Registered: 03/16/10
Posts: 3615
Loc: Argyle
Mine just did this , it was a tear in of the wires on the transducer . If I hit the Tm snowed out the graph and wouldn't show correct depth . Hope that helps
_________________________
A-RIGS , MAKING BAD FISHERMAN LOOK GOOD SINCE 2010

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#11217153 - 11/10/15 04:42 PM Re: Transducer Shielding on Trolling motor [Re: JWRid]
TxFisherman03 Offline
Angler

Registered: 04/07/10
Posts: 416
Loc: Arlington, Tx
my dads did this, replaced the transducer and fixed the problem
_________________________
Byron

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#11217155 - 11/10/15 04:45 PM Re: Transducer Shielding on Trolling motor [Re: JWRid]
SkeeterZX250 Offline
Green Horn

Registered: 11/13/12
Posts: 6
I have the exact same problem with mine. Hope someone has a cure.
_________________________
Terry

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#11217158 - 11/10/15 04:48 PM Re: Transducer Shielding on Trolling motor [Re: JWRid]
ChuChu1 Online   content
Extreme Angler

Registered: 03/08/10
Posts: 2767
Loc: Gonzales, Tx
You don't have your depth finder on the same circuit as your troll motor do you?
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California. Well it's like breakfast cereal. You get rid of the fruits and nuts and all that's left are the flakes. Thank goodness there's a place called Texas.

Member:
Stephen F Austin's Old 300
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#11217598 - 11/10/15 08:24 PM Re: Transducer Shielding on Trolling motor [Re: JWRid]
JWRid Offline
Pro Angler

Registered: 04/07/11
Posts: 607
Loc: Arlington, TX
The trolling motor and the depth finder are on different circuits. Hopefully will not need to replace the transducer. Will check the wires at the transducer.

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#11218185 - 11/11/15 08:47 AM Re: Transducer Shielding on Trolling motor [Re: JWRid]
HaulinBass02 Offline
Angler

Registered: 06/30/05
Posts: 464
Loc: Springtown, TX
I found a small cut in the transducer wire insulation right at the trolling motor motor itself. After looking and not seeing anything obviously cut inside the wire bundle, I used aluminum foil around the cut and wrapped it all tightly with waterproof electrical tape. Been working fine since.
_________________________
'99 Skeeter 186SX SC, 150 Yamaha VMax
'99 Chevrolet Silverado 2500 4x4

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#11218343 - 11/11/15 09:54 AM Re: Transducer Shielding on Trolling motor [Re: JWRid]
Polly Gosh Lizard Offline
Angler

Registered: 12/09/05
Posts: 299
Loc: Palo Gaucho Bayou, Toledo Bend
I have been fighting this problem with my 101 also on my Humminbird.Minn Koto sent me a ring to run my power wire thru but that didn't really help.Now they say I should run a wire between the ground from the trolling motor batteries to the starting battery ground.Haven't done it yet, just putting up with interference in deeper water.
_________________________
Never test the depth of the water with both feet.

Bobby







Alpine Marina (alpinemarina@windstream.net)


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#11218791 - 11/11/15 12:56 PM Re: Transducer Shielding on Trolling motor [Re: JWRid]
monster fish Offline
Angler

Registered: 02/12/08
Posts: 336
Loc: floresville
ok guys I had to figure this out for myself because minn kota customer service sucks. heres what you do go to the hummingbird website and they have a fix for it, if you cant find it, you need to check the fuse under the head cover on the trolling motor, I have no idea why they would put a fuse like that in there....... I guess just to make our lives miserable
_________________________
www.trophe.net

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#11218827 - 11/11/15 01:19 PM Re: Transducer Shielding on Trolling motor [Re: monster fish]
HaulinBass02 Offline
Angler

Registered: 06/30/05
Posts: 464
Loc: Springtown, TX
Originally Posted By: monster fish
ok guys I had to figure this out for myself because minn kota customer service sucks. heres what you do go to the hummingbird website and they have a fix for it, if you cant find it, you need to check the fuse under the head cover on the trolling motor, I have no idea why they would put a fuse like that in there....... I guess just to make our lives miserable


And what exactly is this supposed to fix? What is the fuse for?
_________________________
'99 Skeeter 186SX SC, 150 Yamaha VMax
'99 Chevrolet Silverado 2500 4x4

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#11218844 - 11/11/15 01:29 PM Re: Transducer Shielding on Trolling motor [Re: JWRid]
ezbassin Offline
TFF Guru

Registered: 01/15/04
Posts: 12213
Loc: Mansfield, Tx.
Add a ground wire to the clamp on the T/M that holds the transducer and then to a ground wire in the boat. That should help. If you have a built in transducer then you will have to add a clamp to some metal area on the T/M and attach the wire.

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#11218850 - 11/11/15 01:30 PM Re: Transducer Shielding on Trolling motor [Re: JWRid]
monster fish Offline
Angler

Registered: 02/12/08
Posts: 336
Loc: floresville
apparently the fuse is there to help interference problems with our graphs, but check out the hummingbird website for a better explanation
_________________________
www.trophe.net

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#11218853 - 11/11/15 01:31 PM Re: Transducer Shielding on Trolling motor [Re: JWRid]
monster fish Offline
Angler

Registered: 02/12/08
Posts: 336
Loc: floresville
I have spent a lot of time and money trying to fix, so check out the website before you do anything else. my fuse was blown.
_________________________
www.trophe.net

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#11219497 - 11/11/15 07:14 PM Re: Transducer Shielding on Trolling motor [Re: monster fish]
HaulinBass02 Offline
Angler

Registered: 06/30/05
Posts: 464
Loc: Springtown, TX
Originally Posted By: monster fish
I have spent a lot of time and money trying to fix, so check out the website before you do anything else. my fuse was blown.


Is that only for the trolling motors with built-in transducers? I can't see how that would help an add-on transducer. I will look into this though.
_________________________
'99 Skeeter 186SX SC, 150 Yamaha VMax
'99 Chevrolet Silverado 2500 4x4

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#11219501 - 11/11/15 07:17 PM Re: Transducer Shielding on Trolling motor [Re: JWRid]
HaulinBass02 Offline
Angler

Registered: 06/30/05
Posts: 464
Loc: Springtown, TX
Humminbird interference fix
This is what I found, the fuse is only for trolling motors with US2.
_________________________
'99 Skeeter 186SX SC, 150 Yamaha VMax
'99 Chevrolet Silverado 2500 4x4

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