What? That's far too radical ;-) Is there plug-in new LCD screens available then? Wiring in a new LCD screen in would be a pain. Are they not soldered onto a PCB that'd be part and parcel of the head unit's main PCB?
I haven't done a search but... (later) Nope, couldn't find any new screen only. Have already shelled out £350 for the new Freeview tuner that works fine. Although the tuner comes with a booklet showing an HDMI out, theeve socket's been taken away to house connectors that integrate it with existing Range Rover's plug arrangement. Which is why I'm a bit caught...