I am having the same screen flickering issue with my UN55KS8000. It started doing after 10 minutes of swictching on teh TV. So now the TV is unwatchable with all these flickering. Wondering how samsung build a high end TV that can exactly have same issues for these many users in 3 years. I tried all the steps as suggested like factory reset, software update, removing all cables/including one connect box, but even the samsung home screen is flickering. Hope some one from support reach out and fix the issue.
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