Samsung TV Won’t Turn On / Keeps Turning On & Off (SOLVED)

Table of Contents

Why Won’t My Samsung TV Turn On?

A Samsung TV won’t turn on if the power board or power cord is damaged, and when the fuse is blown.

If the TV is plugged into a socket with a switch, the switch may not have been turned on.
If you’re trying to switch on the TV through a remote, the batteries of the remote are dead or the remote could be faulty.
The socket to which the TV is connected may not be receiving any power supply.
The fuse in the plug of the TV would have blown out or the plug is loosely connected to the socket.
The power cord of the TV could have been removed for some reason and hasn’t been reconnected. Sometimes, the cord may be damaged.
The TV might have been turned off using its power button and you’re trying to turn on the TV using the remote.
External devices may be connected to incorrect or incompatible ports on the TV.
A power outage could have damaged the power board.

How to Fix a Samsung Smart TV that won’t turn on?

Method 1

Check if the standby light in the front panel of the TV is on when you try to turn it on. This helps to determine if your set is getting power supply from the outlet.

If this light is on, go ahead with steps 2 and 3 else proceed with steps 4 to 7.

Try turning on the TV using the power button, bypassing the remote. If the TV turns on, do the following steps.

Take off the back panel of the remote.
Replace the old batteries with a new set of the same type.
Ensure that the polarities of the batteries are matched properly.
Put the back panel on once again.

Switch off the TV and try turning it on again using the remote.
Ensure that all the cables are firmly fitted.
If the TV still doesn’t turn on, try connecting it to another power outlet.
If the problem persists, remove the power cord and replace it with a new one.

Method 2

Remove the TV from the stand or wall mount after unplugging it from the power supply. Always keep the TV flat or upright in viewing position.
Take off the back housing by removing the screws fitted to it using a compatible screwdriver.
Remove all the wiring harnesses and screws connected to the circuit board.
Check for bad capacitors. You may find them easily from visible leaks or bulges and remove them. You may need to use a soldering iron. Note down the polarity and follow this for the new ones.
Fit new capacitors of the same rating by bending the leads backward to hold them in place. Ensure that only 1/8” of the leads are protruding.
Solder the leads to fix the capacitors and clean any flux or solder residue with a damp cloth.
Fix the circuit board in its position by attaching the screws once again.
Reattach all the disconnected wiring harnesses.
Replace the back cover and fix all the screws back in place.

Why Does My Samsung TV Keep Turning Off and On?

A Samsung TV will keep turning on and off when the when the connections are dirty, and when the firmware is out of date.

The TV may not be getting reset properly and has to be reset using the menu option on the television set.
The TV may not have been plugged in properly. Unplug the cord and keep it this way for slightly more than a minute and plug it back on.
There could be a loose cable connection or dirt accumulation in the connections. Disconnecting each cable, cleaning it and connecting it again can be a solution to your problem.
The capacitors on the power supply board may have gone bad and need a replacement. This will require good soldering skills to do it yourself.
The motherboard may be faulty and needs a replacement.
The television may need a software or firmware update. Follow the instructions on the Samsung Support site to get this done. However, this may revert the TV to the default settings.
There could be one or more component or externally connected device that is overheated.
The manual button switch panel, main logic board or power supply board may be defective and needs a replacement.
The batteries of the remote could be dead or faulty. Replace them and try again.
An active Internet connection is causing the TV to turn Off and On. Deactivating the AnyNet+ option in the Systems submenu under Settings is a fix to the problem.

How Do I Stop my Samsung TV from Turning Itself Off?

Unplugging the power cord for 10 seconds and plugging it back in, and updating the TV firmware can stop a Samsung TV from turning itself off.

Method 1

Turn the television off using either the remote or the power button on the set.
Remove the plug connection from the socket and keep it aside for 10 seconds. This will force reset the TV.
Insert the plug into the socket once again and turn on the switch.
Press the Power button on the TV to turn it on again.
If the above Steps 2 to 4 didn’t help, you can try to update your TV with the latest software or firmware using a USB drive or the Internet. While using the USB drive presents an advanced option, it’s recommended that you use the Internet for the update.

Method 2 -Turn off a preset timer on your television

Turn your television on using the remote or power button of the TV.
Press Menu on the remote to enter the Setup menu.
Select the Timer option and press Timer to open the Timer screen.
Turn off the TV Timer mode.
Exit the Timer screen and enter the Eco Settings section to turn off the Auto Power Off feature.
Press Exit on the remote to quit the settings.

Use the above steps to deactivate the Sleep timer by going into the Sleep Timer screen. This could have got activated by pressing Sleep on the remote accidentally.

For an older television that is used along with a cable/satellite box, turn Off the Standby Mode Upgrade option by doing the following.

Press Menu on the TV remote and move to the Settings option.
Select the Software Upgrade option followed by the Standby Mode Upgrade option.
Turn off the Standby Mode Upgrade option.

Why Does My Samsung Smart TV Keep Restarting

Resetting the smart hub and updating the firmware on your Smart TV can stop the TV from continually restarting.

There might be an interconnection problem between the power supply board and the mainboard. This could be because of an overheated connector on a ribbon cable connecting the two boards. Replacing the connector may solve the problem.
The firmware installed on the television could be outdated. Sometimes, a reset solves the problem. Press Menu on the remote and move to the Support option. Select Self-diagnosis followed by Reset or Menu. Click on Support and then Reset. The menu option may differ slightly in some models.
The HDMI CEC Anynet feature that activates the Internet connection may be turned on. Turning off this option can solve the problem. You can also restore the set to the factory settings and go through the setup process again.
The Smart Hub may need a reset. You can do the reset by pressing Smart Hub on your remote to access the Smart Hub screen. Press Tools on the remote to access the Tools menu. Select Settings followed by Reset. If you’ve not set any security code, use the default 0000 code as the password.

Samsung TV Won’t Turn On with Alexa

Ensure that both the TV and Amazon Alexa are set up properly and working. Also, make sure that they are connected to the same Wi-Fi network.
Download the Samsung SmartThings and Amazon Alexa app on your smartphone.
Identify your TV in the Samsung SmartThings app by selecting Add Device on the Devices menu present at the bottom menu. Make sure that your device is turned on for easy identification.
Identify your Alexa device in the Amazon Alexa app by selecting Devices from the bottom menu and checking for your device. If it’s not available, click All Devices and locate your Alexa device from the available list.
Enable Samsung SmartThings in the Amazon Alexa app and sign in using your Samsung account to connect both the accounts.
Select your TV in the Amazon Alexa app.

Samsung TV Won’t Turn On with Google Home

Ensure that your Google Home device is turned on and is unmuted.
Use the Google Home app on your smartphone to check for the visibility of your Google Home device. The Home tab displays the status of the device.
If the status is offline, turn Off the Google Home device and turn it on again. In case this doesn’t work, you’ll need to change the associated network or do a factory reset.
Send a manual command to your television using the SmartThings app. If there is no response, it indicates a problem with the set’s network connection.
Connect the TV to the Internet through a Wi-Fi connection. This is because the voice assistant cannot turn on a TV that uses a LAN cable for an Internet connection.
If there is still no response to the commands, you can consider hard-wiring through Ethernet. To do this, press Home on the remote and select Settings followed by General and Network. Choose Open Network Settings and then Wired.

Please remember that voice commands can’t be used to turn on a TV with an Ethernet connection.

Ensure that the Anynet+ (HDMI-CEC) setting is turned on. Some settings may turn this off automatically. Also, ensure that the Power on with Mobile option under General > Network > Expert Settings is activated.

Samsung TV Won’t Turn On with Apple TV

An upgrade to either the Apple TV, Samsung TV or both may stop Apple TV from getting turned on. Often, a hard power reset or using a Wi-Fi outlet for both Apple TV and Samsung TV addresses the problem.
The Samsung TV OS isn’t updated to reflect the Apple TV TVOS13 changes. Once this update happens, the problem will get solved.
Press Back on the remote of the Samsung TV to turn on the Apple TV. Alternatively, you can go to the remote settings on the Apple TV and turn it on from there.
If your Samsung TV, Apple TV and other devices are connected to a surge protector, unplugging them and plugging them again may solve the problem.

Samsung TV Keeps Going Black for a few seconds

This may be due to an HDCP issue resulting in loss of video while the audio remains. Refreshing or resetting the satellite or cable box will often solve the problem. Also, look for a pending software update for the box.
If there is an intermittent loss of video and sound, the HDMI input could be faulty. Opting for a different video input is likely to offer a fix. You can also try replacing the HDMI cable with an HDMI 2.1 compliant cable.
The external devices may be connected to incorrect ports of the TV. Check the Quick Start sheet and connect the devices to the appropriate ports.
The TV may have been affected by voltage fluctuations. Turning off the Fast Start function can resolve the problem.
If the picture comes back after turning the power off and on again, you have to disable the Eco settings on your set.

Samsung TV Goes Black but Has Sound

Check the HDMI and all other connections to the TV for loose connections or see if they have come off. Setting right these loose connections may fix the problem.
Check the HDMI cable by connecting to another working HDMI socket. If it doesn’t work, opt for a cable replacement, else, clean the original socket and connect the cable once again.
The TV could have a resetting problem that can be set right by pressing Exit on the remote for 10 to 15 seconds and then pressing Enter. Wait for a couple of minutes and turn off the TV.

If this doesn’t work, you can press Exit as mentioned above followed by the Down Arrow key before pressing Enter and shutting down the TV.

The problem may be because of an HDCP problem in the cable/satellite box input connected to the TV. Getting the box replaced will solve the problem in this case. Alternatively, if the problem is with a switchbox connected input device, the HDCP input of the switchbox may be faulty. Try connecting the input to the TV bypassing the switchbox.
There may be a problem with the circuit board or the conductor behind the Power button has blown up. Depending on which is at fault, the component will need a replacement.

How to Troubleshoot a Samsung TV that Keeps Flickering

The TV may have a failing power or mainboard. In some cases, there could be a failed backlight. The faulty component has to be replaced to resolve the problem.
If the TV flickers when an external input has a 1080p resolution, you may need a firmware update. You can also try disabling the SyncPlus option in SmartHub.
There could be a faulty jumper between the cold area and input of the power supply board that needs to be removed.

You can perform the following steps.

Turn off the television and then switch it on again to reset the unit.
Remove the power connection plug from the outlet for five minutes.
Check all other cable connections from and to the TV.
Deactivate the Energy Efficient features through the TV menu.
Check for connection of faulty components to the TV.
Connect the TV to another input source to determine if the problem is with a component or the TV.

Samsung TV has a Black Screen and Flickering Red Light

A TV that has a black screen and a flickering red light is often due to a bad power supply or a faulty HDMI link.

Method 1 – Powercycle the television

Unplug the TV and remove the power cable from the wall socket.
Keep the Power On button pressed on the remote for about 15 seconds.
Plug the TV in once again and turn it on.

Method 2 – Unplug external devices

Turn off the TV and disconnect the device connected to the HDMI slot of the TV.
Turn on the television again and check for proper launching.
If the TV launches properly, connect its source to HDMI 1 and the external device to HDMI 2.
Select HDMI 2 to view the console’s content and revert the connection to HDMI 1 before the TV is turned off.

Samsung TV Won’t Turn On Red Light Flashes 5 Times

The power board may be faulty. Check if the power board has a 5-volt rating and if it is not, get the board replaced.
The backlight LEDs are either shorted or burned. The problem will get resolved if a new strip containing these LEDs is put in place of the old one.
The T-con board may be malfunctioning and a replacement will solve the problem. This board is present at the bottom of the TV, in the middle.
One or more capacitors or fuses on any of the boards may be damaged or without continuity. Getting new capacitors or fuses fitted might fix the problem.

Samsung TV Won’t Turn On Blue Light Flashing

The power supply board has under-voltage capacitors causing them to blow out. Replacing the capacitors can stop the blue light flashing on your Samsung TV. Sometimes, the power supply board will have to be replaced.

Samsung TV Won’t Turn On and Just Clicks

The TV may just click and not turn on due to one or more faulty capacitors.
The plastic insulation between the power supply board pins could have melted resulting in shorting.
There may be a few damaged components on the mainboard.

To solve the clicking problem and turn the TV on once again, you can follow Method 2 given above in the “How to fix a Samsung Smart TV that won’t turn on” section.

Samsung TV Won’t Turn On unless I unplug it

One of the various circuit boards, mainly the power board, could be at fault due to vented capacitors. Replacing the board will solve the problem.
The HDMI cable used to connect an external device could have a problem. Identifying the defective cable will solve the problem.

Try changing the input on your TV: Read How