Check the source’s volume, if applicable.Check the TV volume and adjust it if at a low level or muted.It may be labeled as your mirroring app instead. Ensure that the volume is turned up on your phone for Chromecast.Play some sort of content with audio on your phone or tablet before checking any volume levels.If lack of sound is still an issue using a Chromecast on your TV, it could be the volume level on the TV or phone/tablet. This particular USB input is usually labeled as such. When powering the Chromecast by a USB port on the TV, ensure the Chromecast is not plugged into a USB Service Terminal.Ensure the mini-USB connection on the Chromecast is securely fastened.Avoid using extension cords when possible.If you have a 4K-supported Chromecast Ultra with a dedicated AC adapter, you might want to try a different electrical outlet to rule that power source out.Chromecast is powered by a micro USB cable with a power adapter, and plugging it into the TV’s built-in USB port doesn’t always provide enough power for it to work correctly.There are a few points that you have to consider checking about your Chromecast: Double Check Your Chromecast’s Installation If you get audio using this step, the cable is either damaged at the pins or somewhere in the line.ģ. Next, try using a different HDMI cable.If you have an audio signal, the TV port on the original input may be damaged. Start by switching your Chromecast to a different HDMI port.In addition, your HDMI cable might be damaged either at the pins or somewhere in the line. This issue applies to both Chromecast and your TV. Sometimes, the HDMI port (or a component on the board) malfunctions.
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