Depending on the content being watched, picture settings may need to be adjusted manually. You can easily do this by accessing the TVs settings and navigating to the video section to adjust brightness as well as other video settings. If the issue persists please be with your product and contact Hisense Customer Support on 800 447 3673. Hours of Operation are Monday to Friday 8:30am to 7:30pm AEST and weekends from 9am to 5pm AEST