DMR EX95 freeview plays black and white only


I bought this a few months ago, and all ok bu yesterday I switched it on and on all digital channels it is black and white. The tv is fine…analogue picture on tv is fine as are dvd’s and videos. The menu (functions button) is in the usual blue, but guide is in black and white. When I press record to record onto hd, the screen shos the red of the ‘rec’ as it starts. I have checked all cables, unplugged and plugged, changed the scart, initialised back to shipping condition. I have run out of ideas. What could be the problem? Any ideas gratefully received.