Samsung TV not showing Receiver in the list when connecting a Yamaha

Hi,

Hoping someone can help. I have recently transferred my Yamaha YSP 2700 sandbar into the kitchen where I have a 65” Samsung TV and for some reason the TV does not show the receiver it seems to be grey’d out. I have connected the TV and the Soundbar through the HDMI2 ARC port to the ARC port on the soundbar however this is not working.

Any ideas as it worked perfectly on the TV in our living room where I have another 65” Samsung TV although is a newer model but that should not matter.

Darren