Tv Lg receiver Pioneer

Hello, I have question about tv LG oled65b13la. This tv is connected to receiver pioneer vsx lx 604 via hdmi arc. When I started tv, receiver switch on too. From any time, this is not funkcionál. I don’t know why. I tried to change some settings, but not working. Do you have any advice about the reason why receiver don’t want to wake up? When I turn tv off, receiver goes to offline too.