There are so many ARC complaints I don't duplicate them here.
I recently purchased a Samsung soundbar model HW-J650. It is hooked to my Samsung TV model UN55C7000WFXZA using HDMI 2 ARC. I have an ATT Uverse box, Wii U and Sony bluray plugged in to other HDMI ports. The sound will go out randomly. Sometimes after 5 min, sometimes a few days. It sometimes returns for a little while but usually goes back out. Most of the time, I just listen to sound through my TV. It's basically become a wall ornament. I have sent it in for service. The first time they switched out two PCBs, but that did nothing. This last time they told me there was nothing wrong with it. I checked my TV setting, and it's on PCM. Any ideas as to what could be causing it? Thanks for any insight you can share.