To get surround sound out of the Sky box, you need to connect it to the AV amp using the digital optical connection - it doesn't handle surround via the HDMI socket. So you'll need an HDMI cable to the TV for the picture, and a separate optical cable to the surround amp for multichannel audio.
Just tried HDMI and an optical cable, still the same, and or if i select HDMI 1 for Sky still no center speaker but picture and sound. Optical cable to Sat input on the rear of the amp, left and right speaker and sub I.E still the same but no picture. Should i get the center speaker with the Sky box any way. Thought HDMI was the correct and best way to connect your/my equipment.
Do i just need to switch some thing on some where?