Question about Navman F20 GPS Receiver

2 Answers

Navman F20 I have not used my gps system for a number of months.Now, when I turn it on it shows the battery, the charger shows a green light. The battery disappears off the screen and then nothing ???

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  • lilsarndra Apr 20, 2008

    The picture of a battery disappears off the screen after approx.1 minute and then the screen remains blank. Very very faint I have seen the screen that shows charging but I'm not sure.

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2 Answers

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  • 3,037 Answers

If it won't charge there is probably a break in the cable - If you able to, try to locate the break and repair. you'll probably find it's at the usb plug end. Maybe easier just to replace it.

If this isn't it, then can you explain the "nothing" a little more, does the screen turn off or just freeze up or what?

Please let me know about this.

Thank you for using Fixya and have a Great Day!

Posted on Apr 20, 2008

  • Benjamin Patri
    Benjamin Patri Apr 20, 2008

    Try testing the brightness of the screen first and if it is able to go through from lightest to darkest ok, then most likely the battery has just gone bad. When the battery is displayed on the screen, what charge is it showing (full or half, etc.)

    Here are directions for testing the brightness and whether the screen is the problem


    To get to the test menus First





    Hold down Menu + Power Buttons for 10 seconds





    This will bring you to the -= Maintenance Menu =-





    From here you can use the + & - Sound Keys to move up and down the
    menus and the “Menu Key” to go forward and the ^ key to go back.


    Run a
    Self Test on the device and it should check if the screen is operating correctly.

    Please let me know how this goes and we can go from there.

  • Benjamin Patri
    Benjamin Patri Apr 24, 2008

    Please don't forget to rate this solution as that is one of the biggest aspects of all this website works



    otherwise please let me know if you have further questions



    Thank you

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  • 19,396 Answers

The battery drained off completely for a while probably it is damaged, you need a new battery

Posted on Apr 20, 2008

  • Ginko
    Ginko Apr 20, 2008

    Bring it back to the shop and buy a new battery, before buying the battery have it tested with a different charger, just in case.

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