Hi, I just got an Onkyo HT-S5600 and might need to return it. I want to hook it up to my PA mixer but the outpput won't play hdmi signals. Is there a way around it? Seemed like a good deal but maybe I should have just got it all seperate. Do you think I could just upgrayd the receiver? would they swap it for a fee/differance? Please help only have about 2weeks to send back. free shipping here but it'll be bucks to send back. Could i just return the receiver?