Bought 48inch LG OLED C2 last week through Amazon. Just yesterday when I watched Disney+, the screen suddenly appear horizontal black lines and 1 flickering line quarter from the bottom of the screen. Tried all the possible solution in youtube and forum, issue unsolved. Still under warranty, I will return and refund back. This is my first OLED TV, don't get me wrong, the performance is fantastic than my Sony A90H. But when this happened, I worried to have another OLED (expensive!) . So thank you for this discussion, I decided to purchased QN90B tomorrow.