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Trolling motor interference on Humminbird?
#11388188
02/03/16 12:11 PM
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Joined: Nov 2008
Posts: 7,616
361V
OP
TFF Celebrity
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OP
TFF Celebrity
Joined: Nov 2008
Posts: 7,616 |
My Humminbird 997 up front with a transducer clamped to the trolling motor now gets a lot of interferance that covers the screen with lines from top to bottom while running the trolling motor. New problem. Works perfect except when receiving interferance while running motor. What caused this after years of no problems? Need a new transducer? Thank you, 361v.
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Re: Trolling motor interference on Humminbird?
[Re: 361V]
#11388202
02/03/16 12:26 PM
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Joined: Nov 2014
Posts: 23,370
SteezMacQueen
TFF Guru
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TFF Guru
Joined: Nov 2014
Posts: 23,370 |
Loose ground on the graph, or loose ground on the tm. Try checking for good connections on everything before replacing expensive parts. Sometimes when the TM motor is starting to wear out, it can cause interference.
Eat. Sleep. Fish.
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Re: Trolling motor interference on Humminbird?
[Re: 361V]
#11388203
02/03/16 12:29 PM
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Joined: May 2008
Posts: 358
blackhorse
Angler
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Angler
Joined: May 2008
Posts: 358 |
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Re: Trolling motor interference on Humminbird?
[Re: 361V]
#11388263
02/03/16 01:14 PM
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Joined: Nov 2010
Posts: 5,099
Wayne P.
TFF Celebrity
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TFF Celebrity
Joined: Nov 2010
Posts: 5,099 |
"after years of no problems"
Fix your trolling motor.
Helix 12 CHIRP MEGA SI+ GPS G3N and G4N, 1198c SI, SOLIX 10 SI G3, Helix 8 MEGA SI+ GPS G4N, SOLIX 12 SI and G3, MEGA 360, MEGA LIVE TL, RC-1
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Re: Trolling motor interference on Humminbird?
[Re: 361V]
#11388302
02/03/16 01:46 PM
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Joined: Jan 2004
Posts: 16,859
ezbassin
TFF Guru
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TFF Guru
Joined: Jan 2004
Posts: 16,859 |
I have the same problem with a Minn Kota Maxx 74 and a Lowrance touch 9. I added a ground wire clamped to the head of the T/M and to a ground in the boat and still have interference.
Last edited by ezbassin; 02/03/16 01:47 PM.
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Re: Trolling motor interference on Humminbird?
[Re: Wayne P.]
#11388319
02/03/16 01:55 PM
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Joined: Nov 2008
Posts: 7,616
361V
OP
TFF Celebrity
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OP
TFF Celebrity
Joined: Nov 2008
Posts: 7,616 |
"after years of no problems"
Fix your trolling motor. This is where I'm lost. What is the "fix" for a Fortrex that seems to running perfect? Not sure how its grounded but will check. TY, 361v.
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Re: Trolling motor interference on Humminbird?
[Re: 361V]
#11388400
02/03/16 02:28 PM
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Joined: Nov 2010
Posts: 5,099
Wayne P.
TFF Celebrity
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TFF Celebrity
Joined: Nov 2010
Posts: 5,099 |
Since you have had no problems until recently, the brushes in the motor are probably worn down enough to cause RFI. Fix your motor.
Helix 12 CHIRP MEGA SI+ GPS G3N and G4N, 1198c SI, SOLIX 10 SI G3, Helix 8 MEGA SI+ GPS G4N, SOLIX 12 SI and G3, MEGA 360, MEGA LIVE TL, RC-1
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Re: Trolling motor interference on Humminbird?
[Re: 361V]
#11388410
02/03/16 02:34 PM
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Joined: Oct 2010
Posts: 386
G Rod
Angler
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Angler
Joined: Oct 2010
Posts: 386 |
I think most of the Fortrex units have a ground fuse in the head. If the fuse pops you will suddenly have interference. Pull the top off the head unit and check the small blade fuse.
2016 Basscat Cougar FTD, 250 Mercury www.bcfw.org Bass Club of Fort Worth
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Re: Trolling motor interference on Humminbird?
[Re: 361V]
#11388411
02/03/16 02:34 PM
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Joined: Jul 2008
Posts: 7,656
bradnitro175
TFF Celebrity
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TFF Celebrity
Joined: Jul 2008
Posts: 7,656 |
I think the minkotas have a ground fuse in the head. i have the same problem on a motorguide.geounding the motor helped some
Last edited by bradnitro175; 02/03/16 02:35 PM. Reason: G rod beat me to it
BIG FAT BASS LIVES MATTER
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Re: Trolling motor interference on Humminbird?
[Re: 361V]
#11388445
02/03/16 02:49 PM
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Joined: Jul 2013
Posts: 965
Karl Dietz
Pro Angler
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Pro Angler
Joined: Jul 2013
Posts: 965 |
Make an appointment with Nevelle May at Lake Area Marine behind the Minnow Bucket at Lake Fork. 903-393-9500
He will take your motor apart and run a ground wire from the brushes...inside your shaft...and then connect to the ground wire at the plug. He'll also check out your brushes, etc. on the motor. He did mine and it fixed it.
Be sure to call because his hours are very spotty!
Takes about an hour....then go fishing! Perfect day!
If that's too far, call Don Boris at Boris Marine in Fort Worth 817-624-3932
Last edited by Karl Dietz; 02/03/16 02:55 PM.
Karl Dietz 2015 BassCat Cougar/250 Mercury ProXS 2 HB Helix 12's
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Re: Trolling motor interference on Humminbird?
[Re: Karl Dietz]
#11388893
02/03/16 05:35 PM
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Joined: Aug 2006
Posts: 7,182
steve@S2Marine
TFF Celebrity
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TFF Celebrity
Joined: Aug 2006
Posts: 7,182 |
Make an appointment with Nevelle May at Lake Area Marine behind the Minnow Bucket at Lake Fork. 903-393-9500
He will take your motor apart and run a ground wire from the brushes...inside your shaft...and then connect to the ground wire at the plug. He'll also check out your brushes, etc. on the motor. He did mine and it fixed it.
Be sure to call because his hours are very spotty!
Takes about an hour....then go fishing! Perfect day!
If that's too far, call Don Boris at Boris Marine in Fort Worth 817-624-3932 Nevelle can definately fix that issue... 99% of the time. since spring is springing... he is at the shop alot more.
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Re: Trolling motor interference on Humminbird?
[Re: 361V]
#11388975
02/03/16 06:01 PM
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Joined: Jan 2015
Posts: 101
RW Fred
Outdoorsman
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Outdoorsman
Joined: Jan 2015
Posts: 101 |
I had all the above done and it did not work. Turned out it was the connection to the battery was dirty.
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Re: Trolling motor interference on Humminbird?
[Re: RW Fred]
#11389061
02/03/16 06:32 PM
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Joined: Aug 2006
Posts: 7,182
steve@S2Marine
TFF Celebrity
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TFF Celebrity
Joined: Aug 2006
Posts: 7,182 |
I had all the above done and it did not work. Turned out it was the connection to the battery was dirty. ahh, gotchya.. i guess that was your boat nevelle and i was talking about the other day.
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Re: Trolling motor interference on Humminbird?
[Re: 361V]
#11389248
02/03/16 07:55 PM
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Joined: Feb 2007
Posts: 9,508
Lil' Louie
TFF Celebrity
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TFF Celebrity
Joined: Feb 2007
Posts: 9,508 |
Dad's been having the same probems as well as the depth reading being sporadic at times.
PB 12.88lbs, Lake Fork 3-17-2013 8:45 a.m.
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Re: Trolling motor interference on Humminbird?
[Re: Lil' Louie]
#11389263
02/03/16 07:59 PM
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Joined: Aug 2006
Posts: 7,182
steve@S2Marine
TFF Celebrity
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TFF Celebrity
Joined: Aug 2006
Posts: 7,182 |
Dad's been having the same probems as well as the depth reading being sporadic at times. lake area marine (nevelle may) 903-393-9500 he can fix it.
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