The one I bought stopped working on the first day we wanted to use it for real. No screen. Good sound though
I was ratehr thoping that we had simply managed to hit the right (or wrong) combination of buttons and simply stopped output hitting the screen but the info in the guide explaining how to turn it on and off does nothing. ergo, it's broke!
And then, when I dived intot he manual proper I found words that sound "should not be operated in a moving vehicle". What's the bloody point of buying the damn thing then? I'm just glad it went wrong before we got that far so I can happily return it. I'll be looking for a refund rather than a replacement if I can get it.