AVR doesn’t do anything when turned on.....

[Good4it]

No music and no sound......never mind. It needs to be plugged in first!

 

[Drunkpenguin]

Twelve O' Clock Flasher alert!

 

[lovinthehd]

I'm telling Yamaha. Be sure to hook up the speaker cables, too.

 

[Verdinut]

And you need to feed it with an audio signal from a certain source! Otherwise, no sound!