My neighbours this time lol..

Their 2010 TDV8 radio/Tv/Sat Nav etc has stopped working
The screen comes on with the "Range Rover" display but that's about it, and the power button light is flashing.

It got wet in the back (as they do) last year and it stopped working, we dried it out in the back and after a few days it all kicked back into life. I re-sealed the roof bars and the upper tailgate hinges and all has been fine till now.

We had torrential rain a few weeks ago and the headlining was soaked, and water in the back end. Radio etc stopped working and hasn't kicked back in since.
Just flashes the power button as above.

All advice welcomed!