Quote:
Originally Posted by IntelliVolume
My Samsung UHD panel -- purchased just a few weeks ago and which came out as a brand-new 2018 model -- exhibits a weird green little "pulsating" or "flickering" square in the bottom right corner on CERTAIN cable channels only...it's the weirdest thing. It DOESN'T happen on high-def stations that show the cable news or on the HD HBO channels, just on standard-def HBO channels and some others (that I believe are standard-def)…
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I still think it's a product of the channels themselves. If it was the screen then it would appear with your other inputs. But there are things you can test.
You can change the set-top box to another HDMI input and see if you get the same results.
You can run test patterns to see if there's any screen issues.
You can try a different HDMI cable.
Is Fit-to-screen the picture size you're using? It's set to Off?