My same Samsung receiver does the same thing as yours. No sound at all.
There is no sound when I hook the HDMI cable from the playstation and tv into the unit. I have video but no audio. I have sounds when I play dvds and my ipod and also the radio works when played on the samsung, It's not the wiring touching, I have checked all of them 5 times. My wireless rear speakers also do not connect. Any idea what it could be? Thank you.