Gradient and flickering U2312HM red lines problems

Then I found this post here and now have exactly the same question.

I made the diagnosis, as written in the post linked above and here is the result:

The images are too big for here so this link should suffice: http://imgur.com/a/UfBfc#0

Next step for me, as a 24 "monitors you not a Service tag would be to ask the next thing of customer support tomorrow (as it's too late for that now). Or what I could do?

Thank you!

It was made on 5 October 2012. Thus, the warranty ended October 5, 2015.
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Tags: Dell Peripherals

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