Samsung TV Powers On & Off Automatically

The most common reasons for your TV to turn on and/or off by itself is having external devices connected to the TV or your TV settings. Your HDMI device connections or remote control may be triggering your TV to turn on automatically.  Samsung TV’s which can connect to SmartThings can be turned on using compatible devices, sometimes automatically. However, if abnormal “power on” signals are sent through the wireless network, they will trigger this function and make the TV turn on. 

Image shows QN85D TV

Information Icon Please Note: The information on this page is for Australian products only. Models, sequences or settings will vary depending on location and/or where the product had been purchased. To be redirected to your local support page please click here.

1 Switch off and unplug the TV for a minute. Then re-plug your TV back in
2 Unplug all HDMI connections from your TV
3 Monitor whether your TV may be continuing to power on automatically. If your TV no longer powers on automatically, connect your HDMI device/s one by one to see which device may be triggering your TV to switch on automatically
4 If your TV is switching off automatically, try these steps as well:
  • Menu > Settings All > Settings > General & Privacy > System Manager > Time > Sleep Timer
  • Menu > Settings > All Settings > General & Privacy > Power and Energy Saving > Auto Power Off 
  • Menu > Settings > All Settings > General & Privacy > System Manager > Time > Off Timer 

Note: Steps may differ depending on the model of your TV

5 Check that your TV is up to date with the latest software

1 Press the Home button on your remote control and then head to Settings
Select Settings
2 Navigate to All Settings
Navigate to All Settings
3 Select Connection and then Network
Select Connections then Network
4 Choose Expert Settings
Choose Expert Settings
5 Turn on Power On with Mobile

Note: If you disable this setting you wil not be able to power on your Samsung TV via the SmartThings App.

Choose Expert Settings

Sometimes abnormal power occurs due to external devices or the CEC command. In this case, by checking the TV history function, you can find what is making the TV turn on by itself.

1 Go to the Menu & select Support
tv support menu
2 Click About TV and check the Event logs.
about tv menu


  • About TV is only available with products manufactured in 2019 or later.
  • Make sure that the TV firmware is updated to the latest version.

1. “Power-on reason” appears in the log history

If Power-on Reason appears in the Event Log, you can check why the TV turned on. Your TV can be powered on by mobile apps, sensors, BT, and voice. You can solve the problem by disconnecting or deactivating the connected devices that operate the TV.

power on reason check
  • YouTube - An app like YouTube or the SmartThings app on a device connected to the same AP could be the reason for the TV to turn on.
  • Sensor - Detected and operated by the brightness sensor set in Ambient Mode.
  • WOL - Turned on by eMac phy (Magic Packet) function.
  • BLE - Turned on by the Wake up function of a BT device. 

2. “CEC command” appears in the log history

The CEC feature enables you to control HDMI connected devices with a single remote control. When an HDMI device activates, it may cause the TV to turn on. You can solve the issue by deactivating that feature.

Home > Settings > General > External Device Manager > Anynet+ (HDMI-CEC)

cec command check

3. “One Invisible connection” appears in the log history

Sometimes the TV turns on/off automatically when your connection is poor (AOC Tilt). In this case, thoroughly check all of the cable connections between the TV and OCB.

one invisible connection check

If the above-mentioned methods do not work, perform a Factory Reset. This allows all your TV settings to revert to the factory default. Follow the steps below to reset your TV or follow the link above for steps from previous models.

If the issue persists, please contact our Chat Support or technical experts on 1300 362 603. To find your Samsung product's User Manual, head to Manuals & Downloads.

  This product should be mounted to a wall or other suitable surface to avoid serious injury. Find out more here.