I've been dealing with this issue for 18 months. It will work for a few weeks and then fail again. I go through the unplug, disconnect, reconnect, each time. Sometimes it works immediately, other times it doesn't recognize the soundbar for a few days. I have a Samsung 65" TV and the matching Samsung soundbar connected through the HDMI ARC (Audio return channel) connection. The TV also fails to recognize other HDMI connected devices, Amzon FireTV for example. I 've read through hundreds of posts regarding this issue and I've never seen a response from Samsung support. If they tell you it's because you're using a 3rd party receiver or soundbar, they are being dishonest. My display and soundbar are both Samsung and it's been failing intermittently for months. I won't purchase any Samsung products in the future.
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