The sound on our tv doesn’t work any more while playing tv on the roku stick and instead of the volume sign there is a monitor showing when turning volume up or down. All other apps like YouTube have sound and work through the tv speakers. We checked the sound settings and everything looks fine, there is even a bar showing that sound is playing right now, we just cannot hear it. We checked everything, plugged of the roku stick, checked the cables. It’s weird that the volume sign is gone and it shows a monitor instead. Thanks for helping