WJM

I have had this happen twice in the last 18 months on my 55" oled. Screensaver kicks in right in the middle of a show on my cable box. There is no reason for it to do so. I have found that in my case (don't know if this will be true for others) that it is a problem with the HDMI connection. Somehow the tv does not recognize the HDMI connection anymore. All the other HDMI connections work properly. I have been able to fix it by unplugging the bad HDMI and switching it to another HDMI. I leave the bad HDMI port unplugged overnight and the next day I restore the connection and the problem goes away. To verify that this is the problem go to the screen where you name the all the connections and choose the bad HDMI: the tv will not switch to that connection. It will switch to all of the other HDMI connections without any problem.