The tv seems to miss the 'picture off' (sound only) option in both, picture settings, and accessibility menu.
So, is it just like that?
@Chris10000: If you press the Select button on your remote while playing any recorded/multimedia content, then you should see a series of options e.g. Play/pause, Stop, Previous/Next, Rewind/Fast forward. Amongst these options will be the 'Picture Off' setting, which allows you to play music files with the screen off. I hope this helps.
Thanks for the reply. Well, the option appears there for mp3 files indeed, not on a playing movie thou. Sadly doesn't help me for other sources like the spotify app, various hdmi devices, or TV program. Odd choice.