Tomtom 510 doesn't reset

try re setting the TomTom, reset button is founded on the bottom underneath where the docking mount connect, hold down for 15 seconds, then press the little button on the top on the right side while turning on. worked for me

I would go to www.tomtom.com website and check for updates.

Used straightened paperclip to press reset for 15 seconds. Access hole near connector strip.

There is a reset under the connector to the cradel. It is a small hole. If you push a paper clip in it it will reset back. A soft reset that usally clears this type of issue. If not reload from Tom Tom Home software you can download from the Tom Tom website.

I had a similar problem, ther is a minute reset button where the connector is under the unit, it requires a pin to press it!

Hi!
I have in my possesion 2 Tom Tom 510s both with exactly the same problem, one was used with the incorrect (Nokia) cigar lighter charger the other suffered a Voltage spike from the vehicle it was used.
Both the input transitors have blown and as they are so small they are virtually impossible to re solder. However there is a Guy on eBay who for £80 will repair it.
I bought a different system, £70 and although basic does what it says on the tin.
Sorry to bring bad tidings,
Paul 'W'

You can get your original splash scren from here. You can also download free splash screens created by user through TomTom HOME.

To correct your device, try:

1. Hit the reset button on the back of the device - inside the serial connector.
2. Make sure the device is off and connect it to your computer via USB dock and connect the charging cable (green light should be on)
3. Hold down the power button until the device restarts.
4. The device should automatically connect to your computer.
5. Run TomTom HOME and check for any updates.
6. If there is no new application, try: www.tomtom.com/9091 <-- that will show you how to remove and then reinstall the application.

Try doing a reset with a straightened paper. Insert the paper clip and press down for 20 seconds

Usually resetting the unit (pressing the reset button) is supposed to fix this

Is there a reset button? See this from PocketGPSworld.com: Reset hole The Reset hole is hard to find, you need to first remove it from the mount, turn it upside down, and within the mounting base area of GO you will see two interface slots (currently only one is being used) and towards the front of the unit on the base you will see a little hole marked reset. This is just like soft resetting a Palm or Pocket PC, it requires something small like a paperclip, and nothing was supplied with GO to enable you to easily reset the device.