yellow/bright tint on left side of 23" cinema display

[trailofdan]

Hi
I have a 23" apple mac cinema display (matt version) which seems to be suffering from a slight yellowish tint on the left hand side, it also seems to go slightly brighter that side as well, apart from that the screen is fine. Any info or advice on what's causing this would be welcome, thank you.

 

[MacBook MH]

try reseting the monitor... could it be that it has fallen from some height?