Hey guys I am having a problem witht his reciever i bought second hand and it works great when it works when i first start up the sound will cut off still allowing video to pass through then sound may come back on by itself or takes some switching channels or turning off then turning on. I believe this is a cable issue but i cannot isolate the problem I have an xbox hi def satelite and a ps3 please help vary frustrating it does on all channels like it is not recieving or sending audio. It will not even send test tones in gui mode. I have searched google for solutions but no luck