Onkyo HT-S580 System "sharp aquos video input" Questions

sharp aquos tv with hdmi cables i get no video or sound You need press the input button on your TV's remote.Then you need to select the input setting for HDMI.On mine,there is also an HDMI 2 input

Sharp Aquos Tv with plenty of HDMI ports. I also have a Cox digital cable box bringing the signal in. Just today I picked up a Panasonic DVD/surround system, (SC-PT 770) but it's only got 1 HDMI port.