Just purchased sound bar and red light is blinking. I’ve watched set up tutorial and YouTube videos and don’t know how to solve this? USB is in the arc port and power is plugged Into the wall. Reset several times and the light turns green and then blinks red again. I’m plugged into a new LG oled screen.
So nothing ever displays on the TV screen? All I can suggest is to try another HDMI port just to see if it's functioning at all. The ARC port would be best, but it should display something if connected to any HDMI input when you select the appropriate input. Beyond that, try a different HDMI cable and make sure it's inserted fully.