Indeed the screens are/were in a variety of states showing:
Nothing but a green smudge
Disco Screen alternating from showing lots of random symbols to the trains destination
part of the text missing
Destination but no number
a number but no destination
Destination with no backlight
Destination but with parts of the text showing random symbols
and the side screens have been covered up since the First North Western refurbishment in circ 2003 having been long defunct.
323235 did have a full compliment of 6 x Orange LED destinations screens with one on the cab end displaying half the text because of a fault.