Samsung TV UN65KU630DFXZA

Aloha guys, I am new to this and am trying to figure out my t.v. 
I have a samsung tv model un65ku630dfxza. it works fine for about an hour give or take, then we get all the colored lines and it shuts down and then boots back up. Once it shuts down it will continue to shut down and reboot. Any help would be greatly appreciated. Thank you in advance.
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