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Why Does My PRISM+ TV Turn Off by Itself?

PRISM+ Support teamUpdated 27 July 2026~4 min remaining4 steps

If your PRISM+ TV turns off unexpectedly, it is usually caused by one of the following:

  • Sleep Timer or Auto Power Off is enabled
  • Energy Saving settings are turning the TV off automatically
  • A temporary software issue
  • An external device (HDMI-CEC) is sending a power-off command
  • The TV is overheating
  • A power supply issue

Follow the troubleshooting steps below to identify and resolve the issue.

Steps

  1. 1
    1 min

    The TV may be shutting down automatically because a timer has been configured.

    Navigate to:

    Settings → Devices Preferences→ Power→ Auto Standby

    • Turn Auto Standby OFF.
    • Disable any scheduled power-off settings if enabled.
  2. 2
    1 min

    If the TV has not detected any user activity for an extended period, it may automatically enter standby mode.

    Check that any Auto Sleep or Power Saving settings are configured according to your preference.

  3. 3
    1 min

    A temporary software issue may cause unexpected behaviour.

    1. Turn off the TV.
    2. Unplug the power cable from the power outlet.
    3. Wait 30 seconds.
    4. Plug the TV back in.
    5. Turn the TV on again and monitor whether the issue persists.
  4. 4
    1 min

    Keeping your TV up to date ensures you have the latest improvements and bug fixes.

    1. Open Settings.
    2. Navigate to Device Preferences.
    3. Select About.
    4. Choose System Update (if available).
    5. Install any available updates.

Common Symptoms

SymptomRecommended Action
TV turns off after the same amount of timeCheck the Sleep Timer settings.
TV turns off after being idleCheck the Auto Sleep or Power Saving settings.
TV turns off randomlyRestart the TV and ensure it is running the latest software version.

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