Have you changed your PS3 settings to output through Toslink? Otherwise it will output the audio through the HDMI.
Please Help........This is what I have. Sharp Aquos 52", PS3, ONKYO HT-SR800, and a Motorolo Digital Cable Box from my cable provider.
This is how I have it hooked up right now.
PS3: HDMI + Optical (Toslink) > Receiver
Motorola: HDMI or Component + Optical (Toslink) > Receiver
Receiver: HDMI output > TV
Here is my problem
I set it up this way and this is what I have. The audio and video are working great out of the motorola cable box. I have the audio coming out of the ONKYO Receiver system and is working great. I have these hooked up in the HDMI 1 input and the OPTI 1 Input. I had to assign both of these to the cable input.
My problem lies with the PS3/DVD setup. I have them setup in the HDMI2 and OPTI 2 which states CD on it. When I push the DVD input button on the receiver I get the video, but I have no audio coming thru the ONKYO system. This is happens both when playing a game and watching a DVD thru the PS3. To get any volume I have to turn up the volume on the TV and that is my only audio. Am i doing something wrong. Should I be using a digital Coax instead of an Optical for the PS3/DVD?