Press it, and the onscreen menu will appear. Without a remote, accessing your TV's menu and programming the channels are more difficult. Read through any manuals that came with your television if you still have them. If you are having problems finding the power button, then the follow steps given below. On the Back of the TV: The most likely position of the TV Controller is on the back of the TV in the bottom right corner as you're looking at the TV. Sit down in front of your TV and find the "menu" button.
Check if … To turn on your TV without the remote, just walk over to the TV and hit the power button.

It may be immediately visible or hiding behind a flip-down panel.

Please Note: The TV Control button on your television has limited functionality and certain features and/or settings cannot be accessed without the use of a remote control. Use the channel or volume buttons to navigate to the programming menu.