Hi!
I have a 70pus 8530 philips tv. With the TV's HDMI cable, the ARC is connected to a Pioneer vsx-827 Av amplifier. When I watch Netflix and send the sound to the home theater there is only sound in the stereo! In 5.1 it just sizzles! What is this about?
Have you put audio out as multi channel. It sounds like the audio out is set to stereo from the sounds like it, as believe this is the default out of the box , as I had similar with my Yamaha ysp-1600.
If you change the audio out to multi channel bitstream then it should pass out the Dolby digital plus encoded 5.1 from Netflix.
You may also need to change over via the frequent menu option on output from TV speaker to hdmi sound device.
This should hopefully sort it.