1. On the TV itself, hold down the “Vol -” button (on the right hand side of TV)
2. While holding the volume button down, press “0” on the TV remote three times. Wait. The service menu will load.
3. Now press the “2″ button on the remote. This will pull up a window with the word “SRV-TOOL”.
4. Press the “OK” button on the remote. A light blue grid will appear.
5. On the Grid, move the cursor down (using the remote down arrows) to the row labeled “PTCT”
6. Move cursor to the right. It should be an empty box on the grid.
7. Hold MUTE for 3 seconds. The amount of time the display has been on will be next to the word “TIME” this is in hours and minutes.