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I am looking for success stories, not " possible solutions "
I am especially interested in curing TMI on HB 798 . 2d sonar is
beautiful, only si and di are affected.
Trolling motor is a two year old Minkota Riptide.
I am going to rewire the unit back directly to the start battery,
Not real confident that will work.
Thanks
MO
Where are your transducers mounted, and what kind of trolling motor do you have?
looking and getting is two different things. There exists no silver bullet for electrical interference.
On my terrova and 898, connecting the negatives of the starting battery and the TM battery worked.
I know someone that thought they had TM interference, but had noise on 2d as well. Turned out to be transducer mount was loose. ( I know this isn't your prob as 2d is ok, but figured it might help someone someday ).
I guess I could have stated it more tactfully , but I really want to hear from people who have actually had success, I have read up on all theQuote:
Originally Posted by Cane Pole
theoretical fixes , I was hoping to spot a pattern on what actually worked for folks with 798's.
Catfan--
it is mounted on a MK riptide, with a bracket from Transducer Shield and Saver - See More Fish, Catch More Fish!.
thanks
MO
Here is a good read on noise.
Vexilar, Inc.
Problem is there are numerous causes, so the solution is going to depend on the cause.
Is the Riptide a US2 motor and if so do you use the buit-in transducer? If it's a US2, I'd check the fuse in the head.
Next step IMO, is to take the transducer loose from the TM and hang it over the side in the water and see if the interference is still there. The more you can get separation between TM wiring and FF wiring, the better off you will be, both for the test and normal operation. This will help narrow down where the problem originates.
I have a terrova and had terrible interference.Took it to an authorized dealer and had them install a ground internally in the motor and ran it out to the negative side of my TM plug.Killed all interference
This worked for me. I put the p11 power cable on the new 597 di. That cut down on the problem until I was in 6ft of water or less. So I tried a peice of rubber hose between the transducer and the trolling motor. That fixed the problem. I have a mg trolling motor. these were the fixes I got from reading other post on the interfence problems.
Call humminbird. They sent me a interference kit.. A Choke that goes around the power cable. BEST OF ALL FREEEEEEEEEE! Also included a bigger transducer off the larger SI units..... FREEEEEEE!
700 series, 800 series, 900 series, 1100 series with TM inteference usually troubleshot the same. But, if you only wanna hear from folks with 798's and riptides, so be it.Quote:
Originally Posted by mozingo1952
The 798 comes with a different transducer than the 800, 900, and 1100 series. Those transducers are sheilded where the 798 aren't. In the interference kit that HB has includes the new sheilded transducer along with a choke for the TM and some ferite rings. This kit is free and clears up the interference.
I just installed the new bird 570DI unit on my boat sat, took it out sunday and had interfence when I would run the trolling motor, I run a 80# motor guide variable speed, they say the RC? switch in the variable speed causes this? talked to humminbird today and they recommend changing my noise level to a higher setting, they are set at low at the factory, if this don't do it then run a gound wire from the skeg of the tm to the neg.. side of the cranking battery is where my units power comes from..... I have also wrapped a piece of rubber around the tm head making sure the transducer holder and clamps are not touching the tm head.... then there last resort is to install a tcm1 filter between the unit and the tm....... sure a lot of crap to go through just to make it work right.........
Quote:
Originally Posted by olesilverside
I don't understand the rubber insulator because the transducer mold itself is a nonconductor.
I have just put a 788 on my boat with the transducer mounted to a motorguide tm and I have interference when I first step on the trolling motor and I am trying to figure out how to get rid of it
Olesilverside... Did you have the interference on the DI or the sonar side or both. I also have the 570DI and have some interference on the sonar but the DI is clear. I have a MK trolling motor with no variable speed just 1-5 settings.
My 788 only does it on 2D, the DI is clear. I'm going to work on a few items this week and see if I can get it to clear. It only does it at certain speeds, not all speeds causes the interference.
I said I was especially interested in 798's, but if you have some thing to share besides attitude , Please share. :) I wanted to hear from 700 series folks because the 700's are shipped withQuote:
Originally Posted by Stymie
a different transducer than the other units. I suspected that is the root of my problem , was hoping to hear of fixes other than tranducer replacement.
OK--
talking with HB customer service , they recommended that I get the larger transducer. I am shipping mine back today. Hopefully soon , I will have a full
operational 798 on the bow.
Thanks
MO
Interference is an elusive critter to track down sometimes...keep at it...
What works for some may not work for others..
Let us know how the new xducer works...
Rickie
This is different from you're problem but my 747c had interference problems with my US2, I tried everything but the choke. Humminbirds customer service told me it was not for my unit. So I installed a XTM 9-20 T transducer and have no interference issues at all.
So , Now I am wondering If the compact transducer is working for anybody ? Or is it a complete POS when it comes to trolling motor applications ?
I have always thought it was strange that you could not buy a unit with a trolling motor ducer included. Every bow unit I have bought and it must be
at 8 or 10 by now , I had to do some kind of transducer exhange or special bracket.
MO
Don't get your hopes too high on the larger ducer just yet.
They have had interference trouble also. It seems to be hit and miss. Some folks don't get it, some do. Those that do, some get out of it and others don't.
I have a 798 on the TM. I had interference with the 798 transducer on DI and SI but not 2D. HB sent me a interference kit free. It had the big transducer which is shielded and real nice choke for the 24 volt TM. No more interference.
I think on a floating system all commons should be connected.
Yeah, I replied earlier that connecting my commons together got me out of mine. I've also read reports of others that this caused increased interference. It just all depends on your particular situation.Quote:
Originally Posted by Fisherman_Wantabe
I'm glad my little jumper from Minnkotat did the trick.
I got my full sized transducer installed yesterday . It works like a champ,
Great images , no interference at all.
If you are thinking about a 798 on the bow , I strongly recommend
Getting the bigger ducer
Thanks to all that replied ,,
MO
I had a 798 on the bow with the compact transducer and no issues. I have since upgraded to a larger unit and a new trolling motor. I will give that setup a test run today.
I believe you think right.Quote:
Originally Posted by Fisherman_Wantabe
I fought the interference problem for about a year. I did everything, and I do mean everything, everyone told me to do but all to no avail. The big mistake was not sending screen shots to HB so they could show the Engineers/Techs exactly what I was talking about. After I sent in the photos it was determined that what I was seeing was not electrical interference.Quote:
Originally Posted by mozingo1952
I still have not resolved the problem, sorry to say, but I am not going to give up. I have not been on the water lately but I will start working on the problem again very soon.
I highly recommend that you contact HB and make arraingements with them to send some screen shots and let those in the know take a look to see if you are having electrical interference or a problem such as mine.
PM me if I can be of any help to you.