This situation may be that the keys of the TV remote control are stuck, or the control panel of the TV is out of order. You can try the following methods:

1. Unplug the power cord of the TV and plug it in a few minutes to see if it can solve the problem.

2. Check whether the keys of the remote control are stuck. If so, try cleaning the keys or replacing the remote control.

3. If all the above methods are ineffective, it may be that the control panel of the TV set has failed, so it is recommended to contact after-sales service or professional maintenance personnel for maintenance.