When your Chromecast with Google TV is playing video but you're getting no sound, it's usually a quick setting or connection issue. The problem can be with the device itself, your TV's audio output, or the streaming app you're using.
Check Your TV and Remote Volume
First, grab your TV remote and press volume up. Make sure the TV isn't on mute. Then, use the Chromecast remote to do the same. Sometimes the Chromecast remote controls a separate volume level, so you need to check both.
If you have a soundbar or receiver, check its volume and mute status as well. I've seen cases where the TV volume is up, but the soundbar was accidentally muted with its own remote.
Restart Your Chromecast
Unplug the Chromecast's power cable from the wall or the TV's USB port. Wait for about 30 seconds, then plug it back in. This simple reboot clears out temporary glitches that can affect audio and is often the fastest fix.
Give it a minute to boot back up and try playing something again. A restart fixes a surprising number of odd issues with streaming devices.
Check the HDMI Connection
Firmly unplug the Chromecast dongle from the HDMI port on your TV and plug it back in. A loose connection can sometimes carry the video signal but interrupt the audio.
If possible, try a different HDMI port on your TV. Some older ports might not support the full audio format the Chromecast is trying to send. The HDMI port your Chromecast is in should ideally support ARC if you're using external audio.
Adjust the Chromecast Audio Settings
On your Chromecast home screen, go to your profile icon in the top right, then select Settings > Display & Sound > Audio. Here, you'll find a few key options.
First, look at Audio output. Make sure it's set to the correct device, like "TV" or the name of your sound system. Next, try changing the Digital audio format. Switch it from "Auto" to PCM or Dolby Digital and test the sound after each change.
Some older TVs or soundbars have trouble decoding certain audio formats, and forcing a simpler one like PCM can bring the sound back immediately.
Check Your TV's Audio Output
Using your TV remote, dive into your TV's sound or audio settings. The exact menu varies by brand, but you're looking for the audio output destination.
Ensure it's set to the correct speakers. If you want sound from the TV itself, select TV Speakers or Internal Speakers. If you're using a soundbar via HDMI ARC, you must select HDMI ARC or External Speakers.
Test a Different App or Content
Open a different streaming app, like YouTube instead of Netflix, and play a video. If you get sound in one app but not another, the problem is specific to that first app.
Within the problematic app, try playing a different show or movie. Sometimes, a single piece of content can have an audio track that doesn't play nicely with your setup, while everything else works fine.
Clear the App's Cache and Data
If only one app has no sound, clearing its cache can help. Go to Settings > Apps > See all apps. Find the problematic app, select it, and then choose Clear cache.
If that doesn't work, you can try Clear data. Just be aware this will sign you out and reset the app to its default state, so you'll need to log back in. This is a good tip to do periodically anyway, as the limited 8GB storage on the Chromecast can get clogged.
Check for System Updates
Outdated software can have bugs that affect audio. On your Chromecast, go to Settings > System > About > System update.
Check for updates and install any that are available. Google regularly pushes updates that fix performance and compatibility issues, including problems with audio passthrough and HDMI handshakes.
Try a Different HDMI Cable or Power Source
If you're using an HDMI extender cable, try plugging the Chromecast directly into the TV's port instead. Low-quality or long extension cables can degrade the signal.
Also, ensure you're using the official power adapter and cable that came with the device. Plugging it into a low-power USB port on the TV can cause instability, which might manifest as audio dropouts. Use the wall plug for the most reliable power.
Perform a Factory Reset
If you've tried everything and still have no sound, a factory reset is the final step. You can do this through the menu by going to Settings > System > About > Factory reset.
Alternatively, there's a physical button on the Chromecast dongle itself. While the device is powered on, press and hold the button for about 10 seconds, or until the LED light on the front starts blinking. This will wipe all your settings and apps, returning the device to its original state.
