What to do if the Xiaomi TV F2 55 can’t adjust the volume?

If your Xiaomi TV F2 55 cannot adjust the volume, please refer to the following scenarios and their troubleshooting methods:
Scenarios 1:
If the issue occurs when you are using apps on your TV, please refer to the following methods:
1. Some apps have their audio settings. Check if the app you’re using has any specific settings for adjusting sound;
2. Check TV Audio Settings by navigating to [Settings] >> [Display and Sounds] >> [Sound Settings] >> [Reset];

3. Clear cache and data by going to [Settings] >> [Applications] >> [Manage Installed Applications] >> select the app >> [Clear data] or [Clear cache];

4. Reinstall the app and see if the issue persists. Go to [Apps] >> select [My Apps] >> select the app and press the three horizontal lines button on the remote control, select [Uninstall] and then reinstall the app;
5. Make sure that your TV’s operating system is up-to-date, which often includes bug fixes and improvements. Go to [Settings] >> [Device & Software] >> select [About] >> select [Install Update];
6. If the issue persists, you can consider performing a factory reset. Go to [Settings] >> select [Device & Software] >> select [Reset to Factory Defaults]. Be aware that this will erase all data and settings on your TV, so make sure to back up anything important before doing this.

Scenario 2: 
If the issue occurs when you are using an external device like a DVD player or game console, please refer to the following methods:
1. Ensure the cables connecting external devices to your TV are firmly and correctly plugged into the appropriate ports;
2. Ensure that your HDMI cable is in good condition. If possible, try using a different HDMI cable to see if the issue persists;
3. Check if the external device you’re using has any specific settings for adjusting sound.

Scenario 3: 
If the issue occurs while you are casting on your TV, please refer to the following methods:
1. Ensure that your TV is connected to the internet and that the connection is stable. A weak or unstable internet connection can cause download and update issues. Navigate to [Settings] >> [Network] >> make sure [Enable Wi-Fi/Ethernet] is on;
2. Check the casting device settings such as smartphone, tablet, or computer for any audio or casting settings. Make sure the casting device is set to the correct audio settings;
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.