While you wait for answers, we may have found some information which could help you.
Click here for Sat Nav Works WorkSONY NV U53 How do you open it up?
How do i update Sony Sat Nav NV-U52G maps?
cracked screen on sat nav?
sony nv-u52g?
My Sony NV U53 lcd screen works but touch sensetive no longer works. ?
my screen on sony nat nav is broken - what can I do?