Originally Posted by Tony
I have a Garmin 5015 with a GSD 22 sounder box.
Yesterday after a bum scrub the display data on the unit took ages to come up on the screen, and when it did it just flashed the same number repeatedly. I looked at the sounder box back at the dock and the green light on the box is flashing like it should.
I had that last summer for half an hour or so with a 5xxx...mid-trip, the depth reading starts to flash. Eventually, turned the plotter off and back on and all was restored. Just one of those software thingys?