My LG smart TV went black

Gift Omite. LG has issues with failing backlight arrays. Since your TV shows images when being indirectly lit, this sounds like one of those cases. You can measure the output from the power board to the LED’s and let us know what voltage your power board supplies. Based on this “This “went black but showing blurring picture” there is also the slight possibility that it is the T-con board that is messing up your TV. Let us know what exact model this is and once you remove the back cover from your TV, post some good pictures of the boards and interconnect cables with your QUESTION. That way we can see what you see. iFixitでの質問に画像を追加する方法