Hi all, hoping someone can assist with my problem, I've just bought a second hand insignia and the centre screen that shows sat nav and radio station, volume and everything less does not work. It comes on black woth lines running up and down it. I've had mixed I fo from various dealers, some saying I can swap easily for an aftermarket one with the same functions, others saying it needs coding and it's about £2500s worth of work, any assistance appreciated, thanks.