Afternoon everyone I have just purchased another fullfat 4.4 autobiography 2011 I have the sound coming from the speakers but no vision sorted the dvd side on the rear entertainment system but nothing on the head unit any help really appreciated

Is this whilst stationary and the gear is placed into neutral or park? If not, then that might be your problem. You should not be able to see the screen whilst driving.

Have a look for the "753" way to get into the video diagnostics and test the video inputs from there.

Thanks sausage I sorted it after reading the manual