Quote Originally Posted by Bean2302 View Post
Rickie did just as u stated. Took the transducer off of the foot of the trolling motor as far as I could. Turned on the unit and the Xi5 the prop was moving very slowly. And wouldn't you know it no interference I could even put it as close as a 1/4 of an inch to the trolling motor foot with no interference but as so as I touch it to the trolling motor foot it lights up like a Christmas tree. Tried it with the 859's noise filter on off and high 3
This is indication that the interference is definately getting in the xducer or its cable ... (so the HB unit power wire fixes may not be necessary) ...

Inspect the xducer very carefully for nicks that could allow RFI an easy access in the cable ...

*Grounding the TM skeg to the HB unit negative cable is one possible fix ...
*Adding a ferrite ring on the xducer cable right before the head unit might arrest the RFI before it gets to the head unit ...

I suggest calling HB with the information you have about your confirmed test and see what steps they suggest ...

1-800-633-1468

Rickie