I've had my TomTom Start 20 for about 12 years with no problems. I use it daily and today when I connected it to the charger in my car all I got was a blank screen. It's remained this way for the whole day and I can't work out what's wrong. I can turn it on - I hear the sound of it coming on and if I press my fingers hard against the screen, I can see that it's on. But the moment I take any pressure off the screen it goes blank again.