If your Chromecast Audio is not working, there are several troubleshooting steps you can take to resolve the issue. First, ensure that the device is properly connected to both power and your audio system. Check that the power cable is securely plugged in and that the audio cable is correctly connected to the appropriate input on your speaker or receiver. Next, verify that your Chromecast Audio and the device you’re casting from (such as a smartphone, tablet, or computer) are connected to the same Wi-Fi network.