DISPLAY WINDOW TURNED WHITE

[Confused]

You can change the display brightness in the configurator. Now this is just a wild shot in the dark, but you could try a new configuration with slightly changed display settings and see if this prods anything back into life. Plus, it would at least be informative of what's gone wrong, say if the config change made zero difference.

I rather suspect that you'll need Devialet support with this one though.....

Good luck!