How to STOP a Samsung TV: It has been documented that Samsung TVs have a history of turning on by themselves. This is caused by various issues, each of which differs in complexity.
Auto-starting Samsung TV
When Samsung TVs turn on themselves, they are typically due to Anynet+ (HDMI-CEC). Your DVD player, for example, automatically turns on your TV when it’s connected to HDMI. Anynet+ (HDMI-CEC) can be turned off by going to SETTINGS > GENERAL > EXTERNAL DEVICE MANAGER > ANYNET+ > OFF.
Turn off Anynet+ (HDMI-CEC)
The HDMI Consumer Electronics Control (HDMI-CEC) feature allows you to control your connected devices better with HDMI. You can control your HDMI devices remotely, and your TV can control your devices remotely. If you have HDMI-CEC, as an example, your DVD player can be controlled by the TV remote.
If your DVD player is connected to your TV, it will automatically change the input to HDMI once it turns on. Sometimes, HDMI devices automatically turn on the TV when turned on by default. Samsung calls this feature Anynet+ (also known as HDMI-CEC), and you should start your troubleshooting process here since your TV is automatically turning on.
You need to click on HOME on your remote and, from there, go to SETTINGS > GENERAL > EXTERNAL DEVICE MANAGEMENT > ANYNET+ > OFF. If your TV remote cannot be used to control any other devices, you will not be able to do so. You might have to disable Anynet + to see if that fixes your issue. The Samsung TV may turn on by itself for several other reasons if it doesn’t. You need to try a few more simple steps before things start to get complicated before we begin exploring those.
Connect the power supply cable firmly.
Depending on the year and model, your Samsung TV may or may not have a removable cover on the back. The power cable will then be visible. The cable should be disconnected, then reconnected so that it is snug and fully plugged in. Samsung TV owners report success with this fix. The most important thing is to make sure all your cables and cords are in good shape and firmly attached regardless of whether this covering exists!
Turn off SmartThings
SmartThings is built into some Samsung TVs. SmartThings can connect to and control multiple devices no matter where you are. Another device in your house will likely be turning on your TV if this feature is turned on. No matter what, make sure it’s turned off. SmartThings can be disabled in Settings > General > Network > Expert Settings > Power On with Mobile.
Update your TV’s software
You may experience various problems when you run old versions of Samsung software on your TV. It is normal for your TV to automatically download the latest version for you, but it sometimes does not. You might notice that your video and audio settings reset after a software update.
Restart your Samsung TV
The most common issue is resolved by power cycling your TV or any electronic device! You need to unplug and wait for 30 FULL seconds before you can power cycle your Samsung TV. Keep pressing and holding the power button on the TV for 10-15 seconds after the 30 seconds are done.
You are draining any residual power left in the TV. Reconnect the TV now. Test it out. It may not have worked, but let’s try two more easy things before getting into the more complex stuff. Normally, both of these would cause your TV to abruptly shut down. However, since your TV is turned on itself, you might still want to disable everything that affects your TV’s power supply.
Disable sleep timer
You can use a sleep timer to automatically turn off your TV at a certain time and save energy. Make sure the timer is disabled first. Select SETTINGS and scroll left until you find SETTINGS on your remote control. Press OK after scrolling down to GENERAL. Afterward, select TIME under SYSTEM MANAGER. There should be two timers here. See if either of them is turned on. Those should be turned off if they are, and you should see if it makes any difference.
Turn off Eco mode
TVs from Samsung also feature an Eco mode. You can automatically save power on your TV when appropriate through this mode. If you’re already experiencing some issues with these settings, it’s worth turning them off. The first step to turning off your Eco mode is to select your remote control’s SETTINGS (or select HOME on your remote and then scroll left until you find SETTINGS).
After selecting GENERAL, scroll down to ECO SOLUTION. Determine if any of these Eco settings have been enabled. You might want to try turning them off and seeing if they still cause you problems. If you’ve tried the above steps, but your Samsung TV still turns on by itself, it’s time to get into some of the more complex problems that can prompt this behavior.
Replacing faulty PSB capacitors
The power supply board (PSB) of television consists of capacitors. They act as energy storage centers, smoothing voltage spikes that result from lightning or electrical switches opening and closing. Your TV relies on them for a steady, predictable current! If they are functioning properly.
There has been some controversy over Samsung’s use of undersized capacitors on their TVs. This issue involves two capacitors on the Power Supply Board (470uf to 3300uf 10v). These are known defective capacitors. Check your PSB capacitors to see if any are swollen or leaky if you take the back panel off your TV. It is often possible to spot a faulty capacitor with your eyes.
You may need to replace the entire power board if you cannot pinpoint which capacitor is at fault. When you locate the bad capacitor, you’ll need to order an identical capacitor with equal or greater values, then replace the bad one with the new one using a soldering tool.
The logic board should be replaced.
Your Samsung TV should turn on by itself if you’ve replaced the PSB (or the faulty PSB capacitors), which indicates that the problem is with the main logic board. The board will have to be replaced in its entirety. The Samsung TV’s main logic board is fried by an IC (integrated circuit, basically a microchip).
Make sure that none of the ICs on the board appear to be burned or discolored. The chip numbers on each one should be readable. The chip numbers on each one should be readable. If you can’t read a chip, it is likely the source of the problem. Check out the video below for a step-by-step guide on doing this.
Samsung TV support
You can choose from various service methods, such as in-home service or mail-in service. The cost for this service will vary if the work is covered under a warranty. The good news is that you can have a Samsung technician evaluate the device.
Final thoughts
There has been a history of Samsung TVs automatically turning on.
You can try the following solutions:
- Disable Anynet+ (HDMI-CEC)
- Tighten the power supply cable
- Disable SmartThings
- Update your TV’s software
- Power-cycle your TV
- Disable sleep timers
- Disable Eco mode
- Replace faulty capacitors
- Replace the main logic board
You may need to contact Samsung support to get a certified Samsung technician to see if none of these steps help.
