Question about Navman Mio M400 Car GPS Receiver

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When switched on my navman m420 screen is blank even after charging

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Hi,
Try this: 1. Connect your device to the computer 2. Make a backup of your addresses and favorites if you wish 3. In File Explorer, right click on the device (removable drive) >> Format 4. Start the Desktop 5. Go to My Mio >> Reinstall the software 6. Go to My Mio >> Recover Keys 7. You can now reinstall the maps from the Maps tab. If you downloaded a map update, make sure to use the downloaded file. 8. Go to My Mio / Voice Transfer and re-install the voice files

Posted on Feb 25, 2011

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Posted on Jan 02, 2017

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  • Turn the Navman off by holding the power button in the upper left corner of the device until the screen goes blank.
  • Plug the unit into its charger using the USB port on the bottom of the unit. The battery indicator light next to the power switch should turn orange, indicating that the device is charging. Once the light has turned green the charge is complete. If the light does not turn on, verify that the car charger is plugged into a working outlet.

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Hi Graham,I had exactly the same problem with my Nav Man S50. After the icon of the lap top my screen went blank. I updated it via the soft ware provided but no updates were available. In fact the problem turned out to be the on/off switch. Although it was glowing red it was not charging. I simply placed a pen into the switch and it worked.
Hope this will help.
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Hi,
On the main menu, go to My Mio, then scroll all the way to the bottom and disable shop demo

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1 Answer

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