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Losing HD Transducer At Startup
I have a 2020 Ranger 520L with a 12" Lowrance HDS Live on the console and 9" HDS Live on the bow. It has a 4 battery system; one for starting and accessories and 3 for the trolling motor. It appears there is a NAVCO ethernet box under the dash that is powered and the transducer cables and such go into it.
Ever since I got this boat, I lose my HD transducer on startup. Once the motor starts it will say "No Source" on my screen and it will take 3-4 minutes for me to get the transducer back. I do not lose the graph or screen, just the transducer connection. I suspect the NAVCO box is to blame and reboots when it gets hit with low voltage. This has been happening for the last two years. I have the voltage alarm on the graphs set for 11.5 and I started getting low voltage alarms this year. Last year when the battery was newer I never got any low voltage alarms, but even when relatively new I have always lost the transducer connection.
These items are running on the A1 console switch.
I would love to hear what you think and can offer. Thank you in advance!
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Typically the wiring in any boat out of the factory is undersized for electronics added. I have owned a few boats, and not one of them has had wiring capable of the draw I get after adding all the toys I want (including boats designed specifically for anglers).
Add to that the gradual sulfation that happens in lead-based batteries, and at some point the voltagedrop that was minor when everything was new, becomes problem. The solution is typically to check all wiring and connections and ensure they are OK and can handle the total draw, and to have lead-based batteries load-tested. Using a LiFePo4 as house-battery helps a lot as well, but will not cure undersized wiring/ connections in itself.
Might be worth a read on wiring/ connections:
https://teamcolibri.blogspot.com/202...r-my-unit.html
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The network box is a Navico NEP-2. It is a network hub to connect multiple devices. You probably already knew that. In the operating specs for that device it shows an operating voltage of 9-32 volts DC. It pulls .5 amps. That should not be the problem. Would the voltage drop at the graph cause it to lose connectivity? This could very well be a network setting in my graphs. I am pretty new to this and am still learning. I fish few enough times that every time I go to use it I am back at the bottom of the learning curve. Being 57 does not help either.
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