Question about Navman F20 GPS Receiver

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My navman won't charge or turn on, any ideas?

Posted by chelsea_1989 on


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Screen shows computer to navman all the time

Posted on Aug 13, 2010


Angelito Rabago

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Often the ni-Cad or LiFe cells get so flat they need a special charger with high current. They just will NOT charge up any other method, it may be best if you replace the battery, you need to open up the unit to do that. There is a "Pack" inside. You can get batteries fro,m manufacturer or eBay Craig's list Google etc. However now you would also have to reinstall the software again if not lucky. There are tutorial how to do what you want on the Navman web site

Posted on Jul 25, 2010


Jonathon summesfield

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Could be a number of reasons. If its frozen press in the reset button as it should be on the back.
The battery could be exhausted so try and charge it using the car lead.
The Navigation unit could be at fault or could have a dry connection at the battery or power switch.

Posted on Jul 25, 2010

  • littlelat17 May 01, 2011

    I had this, so I connected it to my laptop.. left it for an hour or 2 then unplugged it.. worked after that


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