Hello, so the screen is already cool. But what bothers me is a colour difference in the upper left corner. This is about 12 cm long and 6 cm high.
I've tried a few things, but I can't get rid of it, so I'd like to ask if anyone is aware of this problem and can give me a tip or whether I should return the thing under warranty.

Thank you and greetings

Question

Hello, so the screen is already cool. But what bothers me is a colour difference in the upper left corner. This is about 12 cm long and 6 cm high. 
I've tried a few things, but I can't get rid of it, so I'd like to ask if anyone is aware of this problem and can give me a tip or whether I should return the thing under warranty.

Thank you and greetings

Answer

I have the same display without the above error.

Clearly a warranty case.

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