Samsung TV Turns Off by Itself — How to Fix

What Does This Error Mean?

Samsung TV turns off by itself is almost always caused by Auto Power Off, Eco Solution, or a Sleep Timer — all of which are enabled by default on most Samsung TVs. Disabling these settings in the menu stops the automatic shutdowns immediately. A TV that turns off at random during active use rather than during inactivity may have a failing power supply board.

Affected Models

Samsung QLED
Samsung Crystal UHD
Samsung The Frame
Samsung Neo QLED
Most Samsung Smart TVs (2016+)

Common Causes

Auto Power Off is enabled and shutting the TV down after 4 hours of no input activity
Sleep Timer is set and running — the TV shuts off after a preset time
Eco Solution's No Signal Auto Power Off is turning the TV off when no input is detected
Power supply board is failing and cannot maintain stable output voltage
TV is overheating and the thermal protection is shutting it down
Anynet+ (HDMI-CEC) is receiving a power-off command from a connected device

How to Fix It

Disable Auto Power Off: Settings > General > System Manager > Time > Auto Power Off > Off.

Auto Power Off turns the TV off after 4 hours of no signal input. It is enabled by default and is the most common cause of unexpected shutdowns.
Disable the Sleep Timer: Settings > General > System Manager > Time > Sleep Timer > Off.

A Sleep Timer set to 30, 60, or 90 minutes will shut the TV off on a predictable schedule. Check this setting first if the TV turns off at consistent intervals.
Disable Eco Solution auto power features: Settings > General > Eco Solution > Auto Power Off > Off.

Eco Solution can shut the TV off when it detects no movement in the room or no signal. This is separate from the Sleep Timer.
Disable Anynet+ (HDMI-CEC): Settings > General > External Device Manager > Anynet+ (HDMI-CEC) > Off.

Anynet+ allows connected HDMI devices to control the TV's power. A Blu-ray player or soundbar sending a sleep command can turn the TV off.
Check the TV's ventilation. If the back of the TV is very hot to the touch, ensure at least 4 inches of clearance on all sides.

Thermal shutdowns happen without warning and may look identical to a normal power-off. Overheating is more common in TVs mounted in enclosed cabinets.

When to Call a Professional

If disabling all auto power settings does not stop the random shutdowns, a technician should test the power supply board for failing capacitors.

Frequently Asked Questions

Why does my Samsung TV turn off exactly after 4 hours?

The Auto Power Off feature is set to 4 hours by default. It monitors input activity and shuts the TV down if no signal change is detected. Disable it at Settings > General > System Manager > Time > Auto Power Off.

Can a connected device cause my Samsung TV to turn off?

Yes. Anynet+ (Samsung's HDMI-CEC implementation) allows connected devices to send power commands to the TV. A Blu-ray player, cable box, or soundbar going into standby can send a power-off command that turns the TV off as well. Disable Anynet+ to prevent this.

My Samsung TV turns off after a few minutes of use — is this a hardware fault?

Turning off within a few minutes — especially if the TV feels warm — suggests overheating or a power supply fault. If disabling the timer settings has no effect and the TV consistently shuts off after a short time, have the power supply board inspected.