Hi, I have bought new Panasonic home theatre to connect to my Panasonic Plasma TV (TX-P42X10B). Home threatre has 2 HDMI ports (one for TV & one for DVD) and I have connected my Xbox on HDMI1 and Home Theatre to HDMI2 on my TV but there is no sound coming from Home Theatre. I have checked all the cables and connections but everything is fine but still no sound

Please can someone advise.

Many Thanks