I purchased two 40" 4K TVs (model UN40KU6290FXZA) from Best Buy around Black Friday 2016. I use them as dual monitors on my computer. I noticed immediately after buying them that one of them would go black periodically for 1-2 seconds and then come back on. It didn't happen often so I didn't worry too much about it (initially it would go black once every 8-24 hrs). Lately, it has gotten worse to where it will go black at least 2-3 times/hr. I originally thought the problem was with the video card, but after doing some troubleshooting, I've determined that it is the TV. I should note that the other TV has worked perfectly with no problems. Please tell me what I need to do to get this fixed.
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