Onkyo is offering to repair receivers with HDMI issues such as no audio on receivers made between 2009-2012. I'm sending them two receivers I purchased in 2012.
Here are some links:
http://www.onkyousa.com/Support/service_info.php#
https://repair.onkyousa.com/na/
Here are some links:
http://www.onkyousa.com/Support/service_info.php#
https://repair.onkyousa.com/na/