I've had my Samsung Q900R 8K TV for about 2 months now and now everytime I cut it off and back on these horizontal lines are appearing across the screen. At first, they used to just pop up after the screen would refresh for game mode but all it took was to cut the TV off then back on then the problem would resolve. Now it's here to stay. This problem just came out of nowhere. Any and all help would be tremendously appreciated. Thanks
Hello, I'm sorry that you are experiencing this with your unit. What is the current software version? Can you check the cords? Navigate to Settings > Support > Self Diagnosis > Signal Information > HDMI Cable Test > Start Test.
If any cables are bad, replace them.
Feel free to send me a private message with your full model and serial number if you are still experiencing the same symptoms. http://bit.ly/33ipYnO
That looks like a resolution conflict between your tv and gaming console. Try changing the resolution settings in both so that they match. Also check the refresh rate and see if changing it helps.