How to Reset the Sony Bravia
Sony Bravia televisions are available in a number of screen sizes and feature numerous settings, including ones for picture display, sound and parental locks. Resetting the Sony Bravia to its default settings requires only a few moments to complete. When you reset the TV back to its factory settings, you must remember to re-adjust your parental control settings if you desire to still have them active on your television.
Press and release the "Power" button to turn on the TV.
Hold the "Up" arrow on the remote control and simultaneously press and release "Power" on the TV. The TV will turn off, then turn itself back on.
Release the "Up" button. Your Sony Bravia is now reset.