My 6000 won't switch on
When I go to switch on my 6000, the TomTom logo comes up but it doesn't go to the next stage - i.e. it doesn't properly switch on. The usual start-up sound doesn't play either. I've tried holding down the on/off button, as TomTom's YouTube advice suggests, and after a while the logo disappears and then reappears but still it doesn't properly switch on. Help!