Watching this.. Ours does not work anymore either. It works through the JBL Aura system via ARC but when the input is changed on the JBL (to play bluetooth sleep noise for the kids in the back), the TV will not switch back to integral TV speaker. I have tried all manners of restarting, new cables, resetting, unplugging, plugging back in without connected to anything, etc. to no avail. TV speaker is grayed out in the settings and says audio out variable. Almost as if the TV is not recognizing it's own speaker anymore. Hasn't bothered me enough to take the TV apart yet but we may get there. Hope someone has fixed this before.
