In fact, the menu key of the remote control is in a very obvious position, which can be found by the naked eye, usually in the middle of the remote control. In the process of operation, you can understand the function of each key, and of course you can also operate in a targeted manner. 1, How to set the child lock on Toshiba TV? The child lock on TV is released in different ways because of different TVs. Common methods include holding down the channel of the TV panel for more than 3 seconds at the same time; Press and hold the remote controller to mute and display 1 sec at the same time; Press the key on the remote control or the child lock key; Press and hold the screen key of the remote controller for more than 3 seconds; Press and hold the F of the remote control and the screen key 1 sec at the same time. If these methods fail, you need to enter the child lock code. 2. The switch of Toshiba TV control panel is locked. It is a blue screen when it is turned on. Press and hold the on-screen display key or mute key for a few seconds to open the child lock. When welding continuously again, you can open the child lock, press and hold the menu key on the panel, and press and hold the channel+ or channel- or volume+- key with another finger for more than 5 seconds. 3. The menu keys of different brands of TV sets are similar, so you can choose according to the menu function. You can press the relevant function keys according to your own needs. When using the remote control, aim the remote control at the power supply of the receiver to avoid obstacles in the middle. At the same time, the remote control needs to be maintained, and the battery needs to be unplugged when not in use.