If the buttons on the Xiaomi TV F2 50 do not work, please refer to the following troubleshooting steps:
1. To ensure that there are no physical obstructions, please rub the dust, and debris on the surface of the buttons as this can sometimes interfere with button operation;
2. To clean up the objects stuck in physical buttons, please unplug the TV from the power source and wait for a few minutes. Then plug it back in and turn it on after cleaning to check if the physical buttons work normally;
3. Please check for updates by navigating to the [Settings] icon >> [Device & Software] >> [About] >> [Check for Updates];
4. If all other methods fail, please reset your TV to the factory defaults by navigating to [Settings] >> [Device & Software] >> [Reset to Factory Defaults] >> [Reset].
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.