First off, what is "SCART," second,you don't mention if you have a dvd player in the mix somewhere. You don't need hdmi from tv to receiver AT ALL. You just need to pass sound to the receiver,not picture. Optical cable is all you need. Is your satellite company willing to spring for a new box that has hdmi outputs?
I recently purchased a Samsung HDTV and connected it to my Satellite (Sky) box and Panasoninc Home Theatre system.
If I use the internal TV Speakers the sound is fine. If however I use the home theatre the sound is delayed compared to the pictures.
Sky box is connected to tv with SCART (no HDMI on SKY box), TV connected to Mome Theatre with HDMI, also have audio output (phono cables) connected to provide TV sound to Theatre System. Without the phono cables I can't get any sound through the theatre system. Any suggestions as to how best to set this up to get rid of the delay.
I see from other threads you have recommended using an optical cable, is this the only solution.