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859 HD

Posted: Mon Mar 07, 2016 6:45 pm
by steve
I am looking for advice as the problem that I have is I run the 859 on the bow and also use a terrova with us2. Last year sometime when the trolling motor was on the graph would go to various depth readings from 3 to 168 feet, interference?
I have checked the fuse in the top of terrova- good, separate ground and power source, its the only thing on that connection?
Any input appreciated, have heard the 900 series did not have this problem and am considering selling and upgrading as was very frustrating to the point I pulled graph off boat.

Re: 859 HD

Posted: Tue Mar 08, 2016 8:37 pm
by Wayne P.
RFI is random with any unit on any boat with any installation. Every installation is unique.

You "heard" a myth.

Contact Humminbird Customer Service for help with RFI.