This occurs because the Dynamic Backlight Control function is adjusting the brightness of the screen when menu items (on-screen displays) or subtitles are detected. Follow these steps to minimize this effect.
- On the supplied remote control, press the HOME button.
- Select
Settings.
- Proceed according to your TV menu.
- Select Picture & Display → Picture adjustments → Advanced settings → Brightness.
- Select Display & Sound → Picture → Advanced settings → Brightness.
- Select Display → Picture → Advanced settings → Brightness.
- Set Adv. contrast enhancer to Low or Off.