Hello everyone, my first post here. I just got a B50 and pair of speakers (Micca OoO). With Bluetooth to phone and on both line out and optical from WiiM Mini, everything works great. HDMI Arc from my TV (Sony X800H), however is not working. If I connect an HDMI to the ARC port (have tried multiple cables) the TV detects it as an audio device and switches to the external speakers. However, there is no sound. The TV remote does show volume of audio system as being raised or lower, but no sound at all. The TV connected to the B50 via optical does work, however, not being able to control volume with the TV remote is disappointing. Anything else I can try?