Try toggling the audio output of the Blu-Ray player (in the Audio Menu) to PCM or Bitstream. It may be that one works better with the television than the other.
The Blu-Ray player has the latest (2.05) firmware. Works fine when connected to the TV with RCA and component cables however with HDMI get only video - no audio.
The TV is a SONY Bravia V series. When I connect my SONY HD camcorder using the same HDMI cable to the same HDMI port on the TV I get both video and audio.
I must add that sometimes I get both audio and video with this blu-ray player and TV.
Please help otherwise I'll have to return this player and get a different brand of blu-ray player