(SOLVED) Why Does my TCL TV Turn OFF by itself?


Why does my TCL TV turn off automatically?

The main cause of a TCL TV turning off automatically either when there is a faulty power supply, damaged HDMI cable or because the TV is running outdated software.

 

Causes

  • cable issue
  • power issue
  • outdated software

 

Power issue

Your TV needs a stable and adequate supply of power to function normally. When it receives insufficient or unstable power, it starts glitching up in different ways.

 

These power issues usually arise from one of these three factors: a supply issue from the main line, a loosely connected power plug, or a power cord issue. Whichever the case is, when TCL TVs receive an inadequate supply of power, they turn off automatically.

 

Cable issue

If you’re like most people, you probably have at least 2-3 peripheral devices connected to your TV. This by itself is no issue, but when you have multiple devices wired into your TV, it becomes likely that at least one of them (eventually) will face issues.

 

This can either be due to a faulty cable or because your TV’s cable port is damaged. Whichever the case, your TV will start receiving mixed and interrupted signals from these devices, causing it to a glitch in different ways. When the interruptions become severe enough, your TV will turn off automatically.

 

Outdated Software

New software versions come as improvements on previous ones- they take away many of the bugs and glitches of old versions. While most TVs today default to automatic update settings, if you or someone else using the TV turns these automatic updates off, you will have to manually check and update your TV periodically.

 

If you forget to do so and keep running an older software version on your device, your TV will glitch- sometimes causing it to turn off automatically.

 

TCL TV turning off by itself

 

How can I stop TCL TVs from shutting down automatically?

To stop your TC from automatically shutting down, either conduct a power reset, a cable reset, or update your TV’s firmware/ software.

Power reset

 

Here are the steps:

  1. find the red power button on the remote and turn your TV off
  2. unplug the power plug from the wall socket
  3. move over to the TV and find the power button towards the bottom of the screen
  4. Press and hold it down for at least 15- 30 seconds
  5. let your TV (still unplugged) rest for about 15 minutes
  6. after this waiting period, plug your TV back into the socket, and
  7. Use the remote to turn it on.

 

Cable reset

 

Here are the steps:

  1. Find the red power button on your remote and turn the TV off.
  2. Switch off power from the wall socket
  3. Remove all cables connected to your TV
  4. Clean these cables and check whether there are any signs of damage
  5. If there are, replace these cables immediately
  6. Now, clean your TV’s cable ports and check whether there are any signs of damage.
  7. If there are, call an expert technician to have the ports replaced.
  8. When all’s good, plug the cables securely back into their respective ports
  9. Turn on your TV and see whether the issue is gone.

 

Update software

 

Here are the steps:

  1. Use the remote to navigate to the settings
  2. Select more settings
  3. Go to device preferences
  4. Go to about
  5. Find and click system updates
  6. If an update is available, click “install now.”

 

 

Why does my TCL TV turn off by itself?

TCL TVs turn off on their own either when they’ve overheated, when the mainboard is damaged, or when your TV’s power cord is damaged.

 

Causes

  • Damaged main board
  • Overheating
  • Damaged power cord

 

Overheating

Most TVs nowadays come with an in-built defense system against internal heat damage. TVs usually heat up when they’re used for long hours without breaks. Overheating, if left unchecked, can cause permanent damage to your TV’s internal hardware. To stop this from happening, your TV turns off automatically when overheated to allow itself some time to cool down.

 

Damaged power cord

If your TV’s power cord is damaged, it will not be able to supply power to your TV effectively (or at all). Since your TV can’t run without power, it will shut down automatically each time your damaged power cord fails to deliver the quota.

 

Damaged main board

The main board is like the brain of your TV- it tells the other internal “organs” of your TV how to operate and then coordinates their operations. Without the mainboard, your TV can not function, so, if your TV has been shutting down automatically a lot recently (or if it doesn’t start altogether) it can be a sign that the main board is damaged.

 

 

How do we fix TCL TVs that turn off on their own?

To prevent your TV from turning off on its own, either give it a rest or call customer support.

 

Let your TV cool down.

The only sustainable way to stop your TV from overheating (and consequently damaging itself) is to give it proper breaks in between long use. This will not only allow your TV time to cool off, but it will also help your eyes rest and re-adjust as well.

 

Call customer support

If the power plug or the main board of your TV is damaged, call an expert technician or TCL customer support immediately for assistance.

We recommend checking in with TCL’s official team first since that’ll prevent any possible issues with your warranty, but if you know you’re not eligible for it, then it’s alright to call a third-party expert. See if you can get the technician to replace the charging cord or the main board.

 

My TCL TV’s backlight keeps turning off- Why?

Your TV’s backlight keeps turning off either because the sleep timer is activated or because the auto-brightness setting is glitching.

 

Causes

  • Sleep timer activated
  • Glitch with the auto-brightness setting

 

Sleep timer activated

Sleep timers are helpful in letting you control your TV screen time. So, when you finish your quota for the day, your TV will automatically power down. This will be confusing for you if you accidentally set a sleep timer on your TV or if someone else sets the timer without your knowledge- it will look as though the TV has turned off on its own.

 

Glitch with the auto-brightness setting

Auto-brightness is now a staple feature in most smart TVs today. It saves energy and reduces the strain on your eyes, by adjusting the screen’s brightness to match the surrounding light levels.

 

If your TV, however, makes an error while detecting the ambient lighting, it will mismatch the screen’s brightness to the actual surrounding light levels. This will especially be a problem if your TV’s screen goes too dim whilst in a lit-up environment. (You won’t be able to see the contents of the screen).

 

How to turn on my TCL TV’s backlight?

To turn on your TV’s backlight, either disable the sleep timer, extend it, or turn off auto-brightness.

 

Turn off or extend the sleep timer.

 

Use these steps:

  1. Use the remote to navigate to the settings
  2. Go to device preferences
  3. Scroll down to find the option to adjust the sleep timer
  4. Either increase the daily quota or disable the timer altogether.

 

Turn off auto-brightness

 

Follow these steps:

  1. Go to settings
  2. Find and click picture settings
  3. Find the auto-brightness feature
  4. Toggle it off
  5. Use the brightness bar to adjust your TV’s brightness to the preferred level.

 

Why does My TCL TV blink before turning off?

If your TV’s screen blinks before turning off, it is a sign that there is an issue with one or more of the cables connected to your TV.

 

If cables are loosely connected to your TV, or if their ports are damaged, your TV will receive mixed and interrupting signals from them- causing the screen to glitch in many different ways.

The screen blinking before your TV turns off is one of the most common symptoms of this problem.

 

Here are the steps:

  1. Find the red power button on your remote and turn the TV off.
  2. Switch off power from the wall socket
  3. Remove all cables connected to your TV
  4. Clean these cables and check whether there are any signs of damage
  5. If there are, replace these cables immediately
  6. Now, clean your TV’s cable ports and check whether there are any signs of damage.
  7. If there are, call an expert technician to have the ports replaced.
  8. When all’s good, plug the cables securely back into their respective ports
  9. Turn on your TV and see whether the issue is gone.

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