How to Factory Reset Yamaha RX A660 Aventage 7.2 4K Ultra HD HDMI WiFi Bluetooth Home Theater Surround Audio Video AV Receiver
Press and hold the 'straight button", then press and hold the "start button" till you see the menu.
With the program buttons go to "Init", click few times with the "straight button" till you select 'All"
then turn off the receiver and it will be factory reset.
