How do i remove battery from navigon easy 40 sat nav

Probably a motor or gear failure!
You could probably do the work yourself. the sat nav screen is accessed by popping up the speaker grille, then 4 no. torx screws fix it down to the dash. when removed there are two black plastics bits of the case and the one on the right houses the motor, driven on cog wheels, its that easy. and then you could investigate and maybe repair yourself. good luck

The usual problem is the voice volume is turned down. This can happen when you are adjusting the volume down just as turn by turn instructions are starting; thus you don't notice it happened, or someone else did it or software glitch caused it or Murphy's law.
The way to fix it is turn vol up to max and set navigation and start driving. As you get to navigation points where you would expect the turn by turn instructions hit the up volume button. Keep trying it will only go up whilst instructions are being broadcast. Try using repeat last directions function to get a better shot at it.
This happened to me and this was the fix, odd but true.
Also see if there is a turn by turn vol level in settings.
Hope it works for you.

You need to remove the chargeable battery from inside the unit for a few Min. and it will clear the processor.

I repair iphones, and ps2/3 and pc's........just getting a quote on the screen and availabliity and I will get back to you...do u have an email

Hi,
Visit this link to download user guide for Navigon 3100, for more information go to this link.

Thanks...!!
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switches on but no navigation. Press navigation and it bleeps only but will not change mode for search

search ebay for screen

croatian

Could be a satellite acquisition problem, mount your GPS in a window area or use an external antenna.

Some sat-navs have this feature as a power saving option, try looking through the menu to see if there is something like turn screen off