Philip Teague posted an answer for this Northstar 951XD GPS Receiver:
"Two things to try: You can take the screws out of the back of the unit to get to the back..."
Philip Teague posted an answer for this Northstar 951XD GPS Receiver:
"Electro Mavin (mavin.com) sell replacement new unused Optrex DMF-50174 Displays units for..."