I have had a 15in Proview screen for nearly 2 years and I have noticed that it has started suddenly to change shade (e.g. go blueish or greenish or go a little lighter or darker). Sometimes, when this happens, it is all over very quickly (a flutter and then back to normal) whislt at other times it goes on for several seconds going through several variations. So far it has not remained in a 'shaded' state. Is this a sign that I will shortly need to replace it or is it reparable? Any advice greatly appreciated.
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