I haven't really worked out a pattern yet of what it is doing as it occasionally works. I think what is happening, once you start the car and turn the TV on it will come up like the second photo, however if you go back to the menu and try the TV 10 minutes or so later it seems to work, anything less than this and it still doesn't work.

I have also found that the reversing camera image is slow cutting in and out when compared to my old analogue unit. So I am wondering if something is taking a long time to initially get up and running, but once up an running it appears to be fine.