Sound turn off when set in 3D view mode
I have got a 55PFL5507H12 TV set upgraded to last firmware version (0.79.4.0). I connected it to an Apple Mac Mini with a DVI-HDMI cable for video and a 3.5mm minijack in Audio IN for audio, following the User Guide instructions. The sound is ok when the TV displays 2D but when I turn 3D on the sound dissapears. It seems the TV Set get sound from HDMI in this case and ignores the audio cable. How can I solve this problem that don't allow me to watch the 3D videos from my mac.