Yamaha Aventage RX-A8A User Manual page 368

TROUBLESHOOTING > When any problem appears
No sound from the playback device connected to the unit with
HDMI
(
The TV does not support HDCP (High-bandwidth Digital Content Protection).
Refer to the instruction manuals for the TV and check the TV's specifications.
(
The number of devices connected to the HDMI OUT jack exceeds the limit.
Disconnect some of the HDMI devices.
(
"HDMI Audio Output" in the "Setup" menu is set to "Off".
Set the appropriate HDMI audio output to "On". For details, see the following:
"Setting the output of HDMI audio to the TV's speakers" (p.274)
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