hi guys, my girlfriends car (2006 Nissan Tiida) has a weird issue with the radio.
its a model with reversing camera in the passengers mirror and rear hatch and a small screen above double din carwings head unit.
basically about 4 weeks ago the entire unit stopped working, all i can see is a white backlight on the screen and the cd eject button works on the head unit.
nothing else works at all
i have changed the head unit and the screen, same issue, i have changed the main fuse box/computer under the hood, same issue, i have changed the relays and fuses for reversing lights.

reversing lights work ok

anyone? any ideas ? driving me nuts.