For well over a year everything has been working great.
I have had a Blu-Ray, 360, PC, and PVR all using the 4 HDMI inputs on the AVR, with the output going to my projector.
As of yesterday afternoon, the only things I have managed to get working are the Blu-Ray and 360, but ONLY through HDMI input 4.
I have been able to get the PVR to output over component to the AVR, and coax to another TV. But not HDMI to anything, so it's a whole problem of it's own.
Today, I updated the AVR firmware to 1.1, it didn't change anything.
I've tried different cables.
I don't know what else to try.
Also, when it's on HDMI inputs 1-3, I can still get the OSD screens, just no sound or video from the source.