Radio screen not working

Hi,I own a L322 2003.

The radio orange light works, as does the radio but the screen is blank.

I was told it could be water in the rear right compartment.

I checked the wires and found that there was rust around the blue plug, to the amp/sat.nav?? (Believe).
Its the box that has the blue and black plugs on the floor of the compartment.

After taking it out and trying to clean it, when I moved the plug around the screen would show signed of colours in the background but no images at all (Land Rover sign)

Have tried to see if can just change the plugs but think it may be impossible.

If any one has any ideas would be great.

Can add photos if it helps.
Joseph
New Forest

Think that`s the tv unit , sat nav is top most box of tricks on same side check connection on that but make sure you wait till light has stopped flashing which means it`s gone to sleep other wise you`ll kill it.

Thank you and sorry for delay in replying.
Have found it is the connector block in the boot, will order a unit on ebay.