I got my new HK7200....working great, but still VERY NEW to it. I had the big screen pulled out while setting things up & was still tweaking stuff. I mention to my GF that I eill be able to put it back soon. I go to the dentist, come back & she had shoved tv back to normal spot.....now no sound at all through receiver. Still worksd through big screen, but just flashes L & R on the speaker selector...... I want to cry.............. What do I do.