Turned on the TV this morning, no sound from Arc. Pressed TV on IOS app and got volume control but still no sound. Diagnostics sent. Would like IP:1400/reboot back. Getting too old to do the hands ‘N’ knees unplug.
Some time back this was a common occurrence. Lately though it’s been better until today.
Hi. Had the same yesterday, unplugged the router & everything is fine again. I am sure you must have tried this. Good luck 
Turned TV off then back on. Sound is back. Maybe HDMI communication issue. In the past that never worked. Still want IP:1400/reboot back just in case. Guess a smart plug would work as well.
Great news 
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