No signal from my projector connected to onkyo 616

SOURCE: No audio sound from HDMI connection from TV to Onkyo 606 amp.

if you go to the setup menu, hardware setup, hdmi, and turn the audio out: on it should work hope this helps

SOURCE: new home theater setup- no signal at tv using onkyo tx=sr605

This might somewhat help. Today I went back .. I went HDMI out of the Cable box and DVD player into 2 of the TVs HDMI ins. The digital audio out from each, straight to the receiver and things are working ok. All speakers are working OK. Sound isnt as loud or crisp but unfortunately I found no other solution.

SOURCE: Onkyo TX-SR606 getting no sound from HDMI sources

Not sure if this is your fix, but I had what I thought was the same problem. I played with my Onkyo quite a bit ensuring the correct assignments for HDMI, audio and all that stuff. Turns out I neglected to make sure the output devices were properly assigned. Many devices aren't default to output sound over HDMI. I changed the audio out settings on the cable box to HDMI and suddenly the Onkyo worked great. I know, I'm an idiot for not checking that in the first place, but maybe someone out there is having the same trouble as well.

SOURCE: HDMI video not functioning on a new Onkyo TX-SR606

For me, it was the Monitor Out setting that had defaulted back to Component. I remembered to change the individual inputs to HDMI - but had forgotten to set the Monitor Out to be HDMI.

SOURCE: onkyo tx-sr606 hdmi problem

Yes the OSD tends to stop working. Here's how to fix it:

http://www.youtube.com/watch?v=gj0x5S9ez5U