So my setup is 2 carbons at console and one at the bow. I have them all networked together and towards the end of last year I noticed that the graph I use for mapping the Navionics map would cut in and out
and the graph would reset back to whatever the default mapping system was for Lowrance. Then the navionics chart would show back up and then go through it the same process at random all day.

Has this ever happened to anyone else? I don't have a chip in all units but I do have a chip in the main graphing unit that I use mapping.

Hope this all makes sense.

Put the card in the other sd slot, if it still happens, might be a loose/bad Ethernet cable.

Try moving the card to a different graph.

I’ve tried it in different graphs but I’m not sure if I have tried different slots.

I even unplugged the network cable and it still does it.

Clean the card contacts with some rem oil. Also sounds like it’s just loose though, so another slot should be fine.

I’ve seen this happen with my Lowrance Live models. Clean the connectors and card.