2001 A4 1.8T Quattro, automatic transmission, 135 000 km.

What is the deal with the red LCD display in the middle of the gauge cluster. Almost every used audi I have seen has a problem with it, including mine. Some lines are burnt out like on an old graphing calculator. Is there a way to replace it or do I need to replace the whole gauge cluster. And if it all has to be replaced where can I find one, i have searched but no luck.

Thank you