Windows casting issue to LG TV – audio plays normally for 1 second then cuts out

Troubleshooting Audio Dropout When Casting from Windows 11 to LG WebOS Smart TVs

If you’re experiencing issues with audio cutting out intermittently while casting from your Windows 11 PC to LG WebOS-enabled smart TVs, you’re not alone. Many users have encountered a similar problem where audio initially plays but then abruptly ceases after a second or two, despite the video continuing smoothly. This article explores common causes and practical troubleshooting steps to resolve this frustrating issue and restore seamless audio streaming.

Understanding the Scenario

In typical use, Windows 11 recognizes LG WebOS TVs as [LG] WebOS TV UP7560AUD, allowing users to cast or mirror content effortlessly. Recently, however, some users have reported that although the initial audio plays correctly, it disappears shortly after starting, leaving only visual content on the TV.

Common Factors Contributing to Audio Dropouts

• Software version discrepancies between the TVs
• Casting method (mirror, extend, second screen)
• Network stability or Wi-Fi signal strength
• Audio output settings on Windows
• Driver or firmware-related bugs

Troubleshooting Steps

1. Verify Network Connection
2. Ensure your Windows 11 laptop and LG TVs are connected to the same Wi-Fi network.

3. Restart your Wi-Fi router to refresh the connection and reduce interference.

4. Check and Update TV Firmware

5. Although your TVs are running different firmware versions (e.g., 03.53.15 and 03.52.60), keeping firmware up-to-date can improve stability.

6. Visit LG’s support website or use the TV’s settings menu to check for firmware updates and install any available patches.

7. Adjust Casting and Audio Settings

8. Experiment with different casting modes: mirror, extend, or second screen, to identify which provides better audio stability.
9. On Windows, navigate to Sound settings (Settings > System > Sound) and select the appropriate output device.

10. Disable any enhancements or advanced audio effects that might interfere with streaming.

11. Reconfigure Audio Output

12. Open the sound control panel (Right-click speaker icon > Sounds).
13. Under the Playback tab, select the LG TV device when casting.
14. Set it as default communication device if necessary.

15. Test whether the audio persists longer without cutting out.

16. Update Device Drivers

17. Ensure your network adapters and display drivers are current.

18. Use Windows Update or visit manufacturer websites for the latest drivers.

19. Use Alternative Streaming Methods

20. Consider using dedicated streaming applications like Miracast, Chromecast,