1, check the power connection: make sure the power cord is properly connected to the audio and power outlet, and check whether the power cord is intact.
2, check the power status: make sure the power status of the echo wall is normal, you can re-plug the power cord or press the power button to restart the device.
3, check the audio connection: make sure the audio cable is properly connected to the sound wall and the source device, and check whether the audio cable is intact.