If a full reset (restart) of the TV is required
If you have trouble such as the picture not displaying on the screen or the remote control not working, try the following procedure.
Press and hold the power button on the remote control for about 5 seconds. The TV will turn off and then restart automatically after a short time.
Your personal settings and data will not be lost after the TV restarts (it is the same as unplugging the AC power cord (mains lead)).