Our 75F6300 tv developed a problem whereby after the TV has been on about 20 mins, a single line of green pixels appears from top to the bottom of the screen about 4" in from the right side.
initially we thought it was the hdmi port as it went away when we changed out the cable. Nope, don't matter what cable, the line come back a few mins after picture is on. The line is present on all sources as well as the built in samsung screen test. Got a service call scheduled. they tell me I need a whole new panel, of course they are back ordered. Oh yes, theSamsung call center is in Manilla Phillipines, the folks on the phone are hard to understand, speak very fast. Will post an update when I have something.