I'm a proud owner of a new 65x95j. I am having a problem with Dolby Digital Plus (DD+) selected for the ARC connection to my trusty Yamaha RX-V375 AV receiver. If I select Dolby Digital (DD) it works. If I select DD+ the Yamaha goes silent and the display says "Decoder off" Which means it is not receiving any signal. If I then manually change the input on the Yamaha and then back again to the ARC input, it works. However I have to do this every time the TV is turned off and on again or when the audio changes to a different format.

I've tried different high speed HDMI cables including a HDMI Ultra Certified Cable.

I can also confirm DTS works ok via ARC.

The Yamaha has been working with a Fire TV stick with DD+ so this format is supported at least on a regular HDMI input.