Question about Garmin Nuvi 660 GPS Receiver

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I have a Garmin Nuvi 660. Serial # 12P414268. I turn on my GPS and I can't key in my PIN number. Nothing is working. I recently returned from a trip to Kansas. The unit worked great until we were on our way home when the screen went black and wouldn't work after that. Hope you can help.

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Power off your Garmin 660 unit. Press on continuously the upper top left corner of screen and then power on the unit by pressing once on the Power button. You should be prompted to clear all user data, or asked if do you really want to start up in maintenance mode. Press "Yes" to reset (warning: all data will be erased and lost, so backup before proceeding) or enter maintenance mode.
To back up your Garmin.

  • From the garmin drive, copy '/Garmin/GPX/current.gpx' to a backup location on your computer.
  • After the hard reset, copy your backed up 'current.gpx' from your computer back to the '/Garmin/GPX/' folder on the Garmin, but be sure to rename it 'temp.gpx'.
  • On the next power cycle, the Favorites will be read from 'temp.gpx' into the non-user accessible memory area on the Garmin where they are actually stored
  • You can also try powering off the unit and hitting the reset button under the antenna, or try the information above but pressing firmly the lower right side of the screen.
    This should reset your Garmin then I would suggest updating your device at the Garmin site. I will attach a link.
    Thanks for using FixYa
    https://my.garmin.com/mygarmin/registrationGettingStarted.htm?productType=auto&categoryType=AUTO

    Posted on May 23, 2011

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