The only other thing is to test the cable. Plug the TV into something else with optical input and make sure you’re getting sound. Otherwise it would appear the optical input is bad.I've tried the following:
1) kept the WXA unplugged for more than 2 minutes - no result
2) did a reset of the WXA - no result
3) restored factory defaults on the WXA - got the settings back (I can change settings in the web-interface now), but still no sound from the optical input
4) changed the output sound format on the TV from SPDIF to PCM - no result
So, I guess that is it...
Thanks to everyone who replied
Regards
And let me say one really dumb thing, there is both an optical input and output on the unit, so I’m assuming you’re using the input.