I have an Xbox 360 and a BluRay player connected to an Onkyo AV receiver, which then goes to a Toshiba 62HMX84 TV. All connections are through HDMI. It used to work great, then one day stopped working. The TV flashes brief images of the Xbox 360. No signal from the BluRay player except brief green or blue boxes. If I connect a different TV (using the same cable), it works. I can also go directly from the Toshiba TV to the Xbox or BluRay player, and that works. What happened to my TV?