I have a new 1390t and it's working very well... But I've noticed that it goes from a bright and colorful screen with white background and streets mapped onto it to a gray background even during the day. It changes from white background to a blue background at night.
Sometimes all I have is just my track on the screen with gray back ground and not very many streets mapped on to it at all even driving in populated areas.
Any idea if this is normal or is the unit having issues? I've never owned a GPS item before this for comarison.