These headsets were working fine, and now I hear no game sound. I checked the connections in the back. The receiver sometimes has a flashing blue light, sometimes no light, and never becomes solid. I can hear "beeps" when I touch the tone or effect buttons. No game volume or xbox menu volume, even when on full. Headset beeps when turned on, with blinking side light. Wont pair with receiver, and only 3 months old and great condition. Any suggestions?