Article ID : 00178114 / Last Modified : 07/27/2021

My OLED TV screen suddenly gets brighter or darker

    IMPORTANT: This article applies only to specific products and/or operating systems. Check Applicable Products and Categories for details.

    If your TV screen brightness suddenly changes, check the following:

    • Check the Ambient light sensor, Light and Color sensor or Light sensor settings. If the sensor setting is on, the brightness of the TV screen changes to match the ambient lighting.

      Check the following:

      1. On the supplied remote, press the HOME button.
      2. Open the Settings screen
        • Using the Quick Settings button (For models released in 2019 or later)
          • Press the (Quick Settings) button on the remote control.
          • Select the gear Settings icon.
        • Using the HOME button
          • Press the HOME button.
          • Select the gear Settings icon.
        • This step will depend on your TV menu options:
          • Select Display & SoundPictureAmbient light sensorAuto luminance level.
          • Select Display & SoundPictureLight and Color sensorBrightness.
          • Select Display & SoundPictureLight sensor.
          • Select DisplayPictureLight sensor.
    • Change the channel or the input source to see if the brightness returns to normal. When an image is displayed on the screen that may easily cause image retention, the screen brightness gradually reduces in order to protect the TV from image retention. The brightness returns to normal if you change the screen or perform another action that eliminates the risks of image retention.

      Note: This function activates frequently because the HOME screen and the top screen apps contain bright still images.

      1. Open the Settings screen
        • Using the Quick Settings button (For models released in 2019 or later)
          • Press the Quick Settings) button on the remote control.
          • Select the gear Settings icon.
        • Using the HOME button
          • Press the HOME button.
          • Select the gear Settings icon.
        • This step will depend on your TV menu options:
          • Select Display & SoundPictureBrightnessPeak luminanceMedium or Low.
          • Select Display & SoundPictureAdvanced settingsBrightnessPeak luminanceMedium or Low.
          • Select DisplayPictureAdvanced settingsBrightnessPeak LuminanceMedium or Low.