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If your TomTom GO/ONE/RIDER is frozen, won’t turn on or does not
behave as it should, it can be fixed by resetting or restarting your
TomTom device. A reset will not delete any data from your device, with the exception of SMS messages on TomTom GO500/700.
your GO/ONE/RIDER to the power charger. If you have a power charger,
use it to power your TomTom GO/ONE/RIDER. If you do not have a power
charger, make sure that the battery in your TomTom GO/ONE is fully
charged. Note: You need to charge your GO/ONE for at least 2 hours using the 12-24V cigarette lighter adapter.
your GO/ONE/RIDER. To reset the unit, you simply have to push a
straightened paper clip (or something similar) into the RESET hole on
On TomTom GO 910/710/510, the RESET hole is located on the bottom of the device.
On TomTom GO 700/500/300, the RESET hole is located on the bottom of the device with the word RESET right next to it.
TomTom ONE, the RESET hole is located on the bottom of the device, with
the word RESET right next to it (just below the SD card slot).
TomTom RIDER, the RESET hole is on the bottom of the device, behind the
SD card door. When opening the SD card door you will see the RESET hole
on the left, right underneath the SD card slot.
Your TomTom GO/ONE/RIDER is now reset. Finally, press and hold the power button for 2 seconds.
before you start take out sd card. 1 turn tomtom upside down. 2 see reset button? 3 use paper clip to press (press for 15secs) 4 now turn on tomtom (hold power button for approx 5secs. 5 re insert sd card. after a few minutes you should have signal. hope this solves your problem.
If the unit is still under warranty, send it back to Tomtom. Even if the unit is no longer under warranty, complain to Tomtom. There is a problem with the CLA (cigarette lighter adapter). It can cause internal damages to your Tomtom. What happens is that there are three wires in the CLA along with a voltage stepdown circuit board. The wire are +, -, and a signal wire. If the signal wire get disconnect the voltage could spike up to 12vdc. The unit is designed for only 5vdc.
If the unit is out of warranty then try the following website for repairs. They can fix the two chips which usually blows.