Excellent! Thank you Edward.
I have managed to get around that screen not working, as most things also appear on the external display.
Unfortunately having spoken to yourselves about this before, the LCD in question is not a replaceable part and would thus require a full board replacement at a cost circa £500 - which I'm sure you would agree would be much better spend towards a FLX 24. I'm tempted to see if there are any part numbers visible on the LCDs, but I really don't want to screw the thing up if I can help it.
Again, Many thanks