I can't help you with the TV, but while you wait for someone qualified in this matter, you may wanna try go into your PS3's
Audio Settings -> HDMI -> Manual
and UNcheck everything EXCEPT:
- Linear PCM 2Ch. 44.1 kHz and
- Linear PCM 2Ch. 48 kHz
I currently have my PS3 hooked directly into my Samsung television via PS3 brand HDMI cable. I seem to notice that the television drops it's center channel audio when playing and DVD or Bluray. What I notice is audio that appears "muffled", as though the television is attempting to play 5.1 or above audio format, while it only supports 2 channel. I have to turn the volume way up even to hear spoken dialogue. Can you suggest any modifications to the television audio settings, or possibly even the ps3 settings, that may correct this issue.