Ok I have managed to dig up some info
On your TV make sure you are using Port 2!
From Samsung manual:
This product supports the 3D and ARC (Audio Return Channel) functions via an HDMI cable. Note that the
ARC function is supported by the HDMI IN 2(ARC) port only.
xx The ARC function allows digital audio to output via the HDMI IN 2(ARC) port. It can be enabled only when the
TV is connected with an audio receiver that supports the ARC function.
From Onkyo Manual:
Audio Return Channel (ARC) function
Audio Return Channel (ARC) function enables an HDMI capable TV to send the audio stream to the
HDMI OUT of the
AV receiver.
This function can be used when:
– your TV is ARC capable, and
– the
TV/CD input selector is selected, and
– “
HDMI Control (RIHD)” is set to “
On”(➔
page 56)
– “
Audio Return Channel” is set to “
Auto” (➔
page 57)
Tip
To listen to audio received by the
HDMI IN jacks through your TV’s speakers:
– Set the “
HDMI Control (RIHD)” setting to “
On” (➔
page 56)
– Set the “
Audio TV Out” setting to “
On” (➔
page 57) or the “
HDMI Control
(RIHD)” setting to “
Off”.
– Set your Blu-ray Disc/DVD player’s HDMI audio output setting to PCM.
– To listen to TV audio through the AV receiver, see “Connecting Your Components” (➔
page 18)
And this step looks important too:
Using the ARC function
You can listen to sound through a receiver connected HDMI cable without the need for a separate optical cable.
1. Select Receiver and set to On.
2. Press the EXIT button to exit.
To use the ARC function, a receiver which supports the HDMI-CEC and ARC features must be connected to the
HDMI IN 2(ARC) port.
Hope this helps :cheers: