sabreaje

so i've had my d3 for a little over a year now, and starting a few months ago, everytime i enter a street address, it just goes right back to displaying the map. i've tried resetting the unit, unplugging the harness, and have had no luck. so if anyone knows of any solutions to this, please let me know. i don't want to have to get it repaired or sell it and get a new unit...although that x920 looks effin sweet!