Nice try, Elephant. But it will still not work.
Your Sonos digital out is 2.0. The 7-40 MK1 is not capable to decode PCM audio, only 5.1. There are 2 solutions:
- In order to decode PCM, the TV needs an update. The TV needs to be HD-ready and I guess the TV is earlier made HD-ready, since there is a PS3 connected. And the DSM (Digital Sound Module) needs a hardware update too. Replace a chip on the module.
- Another and easier solution is to use the analogue out (red/white RCA connector) and connect these to a scart of the TV. You can use an adapter to go from RCA to scart. Offcourse in this setup you will use the DAC of your Sonos, which is not that bad.
In both cases, if you want the screen to stay black and center-speaker off, and you want that, add "A.V.AUX" to your beo4, and choose that command. The screen will only go black if your TV is in V.OPT2.