To use Chromecast on an LG TV, plug the external Chromecast into an available HDMI port and connect its USB cable to a power source, then switch the TV to that HDMI input and complete setup with the Google Home app. If you also have a Roku device, you can use Chromecast on Roku TV to mirror your screen without switching inputs. Once set up, you can cast from a phone, tablet, or computer by tapping the cast icon and selecting your Chromecast, and you can even Chromecast from phone to PC to view your mobile screen on a larger laptop display.
How to use Chromecast on LG TV: connect the hardware
Start by physically connecting the Chromecast to your LG TV. Insert the Chromecast into an available HDMI port on the TV. Then, plug the USB cable into the Chromecast and connect the other end to the included power adapter, which goes into a wall outlet. This powers the device and ensures it can stream content reliably. If your LG TV has a USB port, you could use that for power, but the wall adapter is recommended for consistent performance, especially during high-bitrate streaming.
Switch your LG TV to the correct HDMI input
After connecting the hardware, use your LG TV remote to change the source or input to the HDMI port where the Chromecast is plugged in. Press the "Input" or "Source" button on the remote, then select the matching HDMI number (e.g., HDMI 1, HDMI 2). You should see the Chromecast welcome screen appear. If the screen is blank, double-check that the Chromecast is firmly seated in the HDMI port and that the power adapter is connected.
Set up Chromecast using the Google Home app
Download the Google Home app on your smartphone or tablet from the App Store or Google Play. Open the app and sign in with your Google account. Then, tap the Add (+) icon, select Set up device, and choose New device. The app will search for your Chromecast. Follow the on-screen prompts, this includes connecting to your Wi-Fi network, scanning a QR code or entering a setup code if shown, and naming your Chromecast (e.g., "Living Room TV"). Ensure your phone or tablet is on the same Wi-Fi network as the Chromecast during this process.
Complete the setup steps
- Confirm the setup code displayed on your TV matches the one in the app.
- Select your Wi-Fi network and enter the password.
- Choose a name for your Chromecast or keep the default.
- Optionally enable Guest mode if you want others to cast without joining your Wi-Fi.
- Sign in to your streaming services (like Netflix or YouTube) when prompted for easier casting.
Cast to your LG TV from a mobile device
Once setup is complete, casting from a phone or tablet is straightforward. Open a compatible app, such as YouTube, Netflix, Spotify, or Google Photos, and look for the cast icon (a rectangle with Wi-Fi waves). Tap the icon, then select your Chromecast from the list of available devices. The content will start playing on your LG TV. You can continue using your phone for other tasks, and use it as a remote to pause, play, or adjust volume.
Cast to your LG TV from a laptop or PC
For laptop or PC casting, use the Google Chrome browser. Open Chrome and navigate to the content you want to display, whether it's a streaming site, a local video file, or a presentation. Click the three-dot menu in the top-right corner, then select Cast. In the dialog that appears, choose your Chromecast from the list. The browser tab or your entire desktop will be mirrored on the LG TV. You can keep browsing in other tabs while the cast continues.
Fix common Chromecast issues with your LG TV
If casting fails or buffers, start by checking your Wi-Fi stability, both the Chromecast and your casting device should be on the same strong network. Restart the Chromecast via the Google Home app: open the app, select your device, tap the settings gear, and choose "Restart." Also verify the power and HDMI connections are secure, and that the LG TV is set to the correct HDMI input. Keep the Chromecast firmware updated through the Google Home app, and update your streaming apps regularly. If issues persist, temporarily disable any VPN or proxy on your phone or computer, as these can interfere with casting. For mobile devices, ensure battery optimization isn't restricting the Google Home app or casting apps in your system settings. Clearing the cache and data of problematic apps can also help. If none of these steps resolve the problem, contact Chromecast support for further assistance. Unlike the setup for Chromecast on Roku, which requires a different app and process, these troubleshooting steps are specific to LG TVs and external Chromecast devices.
