I have a 65" LG, OLED, 4K Ultra HD, Smart TV. I have had this TV for 1 month. The screen just went blank / black but everything else was working on it.... sound, apps pages, etc. but I could not get a video or satellite image at all. I decided to try resetting the TV to it's original setting and it worked. I have a picture again. It is a complete pain as I now have to go back and set everything up again. But at least I can watch the TV again. Hope this helps some or all of you!!!