I use a Onkyo 705 receiver to listen to DirecTv(sometimes) and Blu-ray, for this the volume on the TV is dropped to zero.
My DirecTV box audio out is connected straight to the receiver via optical and for when I don't use the receiver, a HDMI cable connects DirecTv and TV.
BD-35 is player connected to receiver via HDMI with HDMI going back to TV for video only, no sound .
I have been using this set-up for over a year with no changes to the room.
I'm starting to hear light static coming from the TV's speakers during Blu-ray play,
no adjustment to the TV's speaker settings does anything to get rid of the noise, not even shutting the speakers off.
Only shutting the TV off/on makes the noise go away.
This was occurring with 1.8 firmware, this morning I updated to 2.0 firmware...so not sure if it happens now.
next step is to check the HDMI cable.
definitely coming from Blu-ray use(Panasonic BD-35).