7612xsv seems to have a glitch in that once I turn it on and fish for some time, it reloads the lakevu ultra maps. More of an annoyance but it does it a few times during a four hour trip. Suddenly sonar screen disappears and it goes to a map load page that I have to acknowledge by touching a "button" to get back to sonar. Anyone else have this?
might try swapping the cards in their slots in the unit and see if that does any good.