Screen problems. Black round huge circles

[userClqBYwlcmg]

Hello i have a tv UE65KS8000!   Serial number :  <HIDDEN>.  Got it as expensive birthday present. Friends paid it nearly 2000£.  For last two months i started to experience some issues with the screen. At the beginning it was just few dots on the screen... Noe it stsrted to expand all over the screen. At one side there is maybe 50x50 mm wide black circle. Its not cool that tv for such a price after using 3 years started to die. Please help me to fix issues.

[SamsungAl]

This forum is for the support of US products and customers. As your product is a non-US model and support for these models is very limited, please seek a support team for your area. You can do so by using this link: http://www.samsung.com/visitcountry  Thanks!