I have been unable to set my Virgin Media TIVO remote control to operate volume/mute for this 32WD756 TV. I have tried the "search all-codes"  and  "Quick Search SONY codes"  procedures as directed on TiVo help screen.

None of the following SONY codes listed on the Tivo menu work: 0018; 0045; 0101; 0131; 0154; 0177; 0211; 0301; 0302; 0357; 0358; 0609; 0785

Does anyone know the actual code?, please advise.

(I have successfully set volume / mute etc for my main TV and 3 other friend's TVs so I am well used to the procedure.)