Here's a strange one. When I use a Lakemaster chip in my Lowrance 522-C, the land is the same color as the water. All the other Lowrance machines around here show the land as tan. I put their chips in my machine, same color. I put my chip in their machine, tan.

I have gone over and over the Lowrance settings, and all appear identical.
The unit is networked to a 3000 series gps, and both do the same thing.

My Navionics chips display all colors.

Any ideas???