First, you need to turn on the TV and tap on the Setup button two consecutive times. Once again, tap on 9, 9, 1 buttons back to back and the TV key will blink two times. After that, press the power button once and release it. Then keep on pressing the CH+ button from the remote control until the device turns off. Once again press the Setup button and the TV will turn on. You can see the four-digit code on the screen.