Solution to the original problem above.
You need to connect TomTom to a computer and run their 'TomTom Home' program. Let it check for updates. It will download a file called "QuickGPSfix data". This file updates your TomTom with the latest satellite positions and ensures your TomTom will find its coordinates very quickly after switching on. A new file can be downloaded at least once a week. Generally, the longer you left it since downloading this file, the longer it will take to find its coordinates (ie. find a signal).
Hope this help.
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I was having same problem, tried resetting to factory settings, turning it off and on, tried downloading stuff from tomtom site etc etc. Spent 5 hours trying and finally found the hard reset hole at bottom of TomTom. Put pin in and held for 15 seconds, took pin out waited for 5seconds. It turned itself back on and all the GPS signals were back. Hope this works for you
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