The sound of the Xiaomi TV Box S (2nd Gen) changes dramatically.

If the sound on your Xiaomi TV Box S (2nd Gen) changes dramatically, please refer to the following steps:
Scenario 1:
If the issue occurs when you are using the built-in speaker of your TV, please refer to the following methods:
1. Ensure the HDMI cable is securely connected to the Xiaomi TV Box S (2nd Gen) and your TV;
2. Try playing different content to determine if the issue is specific to a particular source or application. This can help identify whether the problem lies with the Xiaomi TV Box S (2nd Gen) or the content itself;
3. Check the sound settings on the Xiaomi TV Box S (2nd Gen) by navigating to [Settings] >> [Display & Sound] >> [Advanced sound settings] >> select [Select Formats] and [AC4 dialog enhancer] >> check the relevant settings;
       
4. Turn the Xiaomi TV Box S (2nd Gen) and your TV off and unplug them from the power source. Wait for a minute, then plug them back in and turn them on;
5. If possible, connect the Xiaomi TV Box S (2nd Gen) to another TV to see if the issue persists. This can help determine whether the problem is with the Xiaomi TV Box S (2nd Gen) or the TV;
6. You can check for system updates by going to [Settings] >> [System] >> [About] >> [System update]. If it is the latest version, a message will appear on the screen indicating that your system is up to date;
7. As a last resort, you can try performing a factory reset by going to [Settings] >> [System] >> [About] >> [Reset]. Please note that the operation will erase all the data, so be sure to back up important information before proceeding.
Scenario 2:
If the issue occurs when you are using an external device like a soundbar, please refer to the following methods:
1. Make sure the audio system is functioning correctly and compatible with both the Xiaomi TV Box S (2nd Gen) and the TV. Try to connect another audio system to it and see if the issue persists;
2. Verify the cables connecting external devices to your TV are firmly and correctly plugged into the appropriate ports. Ensure that the cables are not physically damaged;
3. Check if the device you’re using has any specific settings for controlling sound.
If the above troubleshooting methods can’t resolve the issue, please contact our local official service center or your seller for further assistance. They will help you in this regard.