1, turn on the TV.
2. Use the TV remote control, aim the remote control at the TV, press the menu key, find the system settings in the pop-up menu options, select it and press the Enter key to enter.
3. After entering the system setting interface, find the setting option of on-off sound, select it and press Enter to enter the setting state. The on-off sound can be turned on or off by the left and right arrow keys of the remote controller; After selecting Close, press Enter again to complete the setting.
4. Exit the setting interface, restart the TV, and you will find that the sound of turning on and off is gone.