I've just bought a UE43AU8000, and I'm having an issue with the audio setup. It's connected to a Sony DAV-DZ260 DVD Home Theater System via HDMI (on the ARC port) and Optical.

The main issue is that when you switch the audio output on the TV from 'TV Speakers' to 'Receiver (HDMI)', it will switch back to 'TV Speakers' in a few seconds. In the few seconds it is outputting to 'Receiver (HDMI)' everything is working perfectly, audio is being outputted over the optical cable, and volume control is going over HDMI. Switching it to 'Optical' output does stick, but obviously I lose volume control.

Now I realise that the receiver is pretty old now, and doesn't support ARC or eARC, but the TV is capable of doing exactly what I want, it just won't stay there.

Does anyone know how to fix this, and get it to stay on the 'Receiver (HDMI)' output setting?