Ever since I bought my 4.8iS in October, the screen has intermittently flickered.


I bought an identical front headunit off ebay, but the same issue occurs. I also bought another Nav DVD unit (behind the side panel in the boot/trunk) as I thought it was that which powered the screen, but the problem still persists. I've given the plugs a spray with WD40 contact cleaner, but no improvement. After swapping the Nav DVD unit I think it's now actually worse. Is it likely a wiring issue between the Nav DVD unit and front headunit, or is there another component which could be faulty? I don't have any TV screens in the rear of my car, so don't think I have a TV module.


Short clip of the screen issue (ignore the sound, the radio tuned in to the nearest station...honest!)


https://youtu.be/rcKSUlWNmDM