I purchased this 4K - 3D TV few years back. Since last couple of months, for some reason it's developing PURPLE spots in many places on the screen. Some spots are DARK PURPLE, some are whitish purple. I see many are facing the similar problem with other Samsung TVs - but I don't see any solution provided. What is the solution to this problem, I tried resetting the TV to factory seetings - it didn't resolve anything.
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