Power does not turn on / Power is turned off

Check whether the power plug is correctly inserted into the power outlet. link

The sleep timer is set. Turn on the power again. link

“Auto Standby” is set. “Auto Standby” is triggered when there is no operation for a set amount of time. To disable “Auto Standby”, set “Auto Standby” on the menu to “Off”. link

The protection circuit has been activated due to a rise in temperature within this unit. Turn the power off, wait about an hour until this unit cools down sufficiently, and then turn the power on again. link

Please re-install this unit in a place having good ventilation.

Check the speaker connections. The protection circuit may have been activated because speaker cable core wires came in contact with each other or a core wire was disconnected from the connector and came in contact with the rear panel of this unit. After unplugging the power cord, take corrective action such as firmly re-twisting the core wire or taking care of the connector, and then reconnect the wire. link

Turn down the volume and turn on the power again. link

This unit’s amplifier circuit has failed. Unplug the power cord and contact our customer service center.

Power in either ZONE2 or ZONE3 is on. To turn off the power of this unit (standby), press the ZONE2 ON/OFF or ZONE3 ON/OFF button on the main unit or press the ZONE SELECT button on the remote control unit to select a “ZONE2” or “ZONE3”, then press POWER  button on the remote control unit.

A HEOS device on the same network is playing an input source from this unit. Stop playback on the HEOS device when turning this unit off (setting it to standby). The power of this unit will turn off automatically after around 20 minutes.