Having problems with loss of signal from my HD transducer connected to my dash Helix 10 SI to my Helix 10 SI mounted on the bow.


My setup:
Dash: Helix 10 SI connected to HD SI transducer on the transom.
Bow: Helix 10 SI connected to US2 transducer in my Ulterra with I-pilot Link.
Network Hub mounted under the dash connecting my Dash Helix, Bow Helix, and I-pilot Link. Network Hub is switched thru Accessory Switch on dash, that is the only load on the accessory switch.


Normal setup: Dash reads from transom mounted transducer, Bow reads from US2 for depth, and HD Transducer via the Dash unit for SI and DI inputs.


Problem: For the last few fishing trips when I move to the bow to start fishing, I power up the Bow unit, and get indication that i-pilot link is connected, and verify that I have input from the Dash unit for DI and SI input. with in minutes I start getting a loss of SI input or loss of DI input warning popping up on the bow unit, never any indication that I have lost i-pilot or US2 input. I clear the warning and check the network setup, all inputs still indicate to be there and select the Dash unit again for DI and SI input, minutes later the same thing occurs. I have pulled all connections, cleaned them and put di-electric grease on all of them to make sure I don't have a corrosion issue taking place. The last two times out, after giving up on wiggling wires, etc to determine where the high resistance connection could be, the problem just goes away on its own after an hour or so. I never have issues with the HD transducer on the Dash unit, or any indication of loss of input to the Dash unit, only input to the bow unit being lost from the Dash unit.


So, since I have cleaned and relubricated every connector, verified no power problems or reduction in voltages of any type, and am not having any issues with i-pilot that routes thru the same network, my question is what do I need to look at next to solve this problem? I posted this same question on the side imaging forum to see if anyone on there has an idea also. Any thoughts of where to look next?

Thanks,
Brent