How to Fix a Vizio TV that Turns OFF by itself?


Why does my Vizio TV keep turning off?

The reason why a Vizio TV turns off mid-use is either because there is a loose or damaged HDMI cable issue, the TV software is outdated, or because of a faulty power supply.

 

Causes

  • Cable issue
  • Outdated TV software
  • Power issue

 

Cable issues

If your TV’s cables are loosely connected or if their ports have deteriorated, your device will get interrupted and mixed signals from the peripheral devices. These signals can confuse your TV’s main board and cause a problem that results in your TV shutting down. In such cases, you need to check whether the cable is connected properly and if the ports are working fine.

 

Outdated Software

Software updates bring improvements to existing software and get rid of any bugs that might disrupt your user experience. While most TVs update their software automatically, if you disable this setting accidentally, you will end up using outdated software without even knowing it. This will explain any random shutdowns your TV might experience.

 

Power issue

Your TV runs on power. If it gets no or unstable power (due to a damaged or loosely connected power cable), it will stop operating normally. Instead, it will start shutting down mid-use. And, if the issue prologues long enough, it may damage your TV permanently.

 

How to fix a Vizio TV that keeps shutting off?

To stop your Vizio TV from turning off randomly, conduct a power reset, check and update your software, or conduct a cable reset.

 

Cable reset

Follow these steps to cable reset your TV.

  1. Turn off your TV
  2. Take out the power cable from the socket
  3. Take out all connected cables from your TV
  4. Clean their ports and ensure that they’re free of damage
  5. Plug them back in
  6. Start up your TV

 

Power reset

Follow these steps to power reset your TV:

  1. After turning it off using the remote, unplug your TV from the main socket
  2. Now, with your TV still disconnected from the power, find the power button below the screen
  3. Press the power button on your TV for at least 30 seconds. This will drain all excess power from the device.
  4. After this, leave your TV unplugged and let it rest for about 10 minutes
  5. Once the wait is over, come back, plug in your TV to the socket, and turn it on using the remote.

 

Software update

Here are the steps you need to follow to check and update your TV’s software:

  1. Pick up your TV remote and press down on the menu button.
  2. Now, find the system settings in the menu that pops up.
  3. Click “check for updates” to confirm whether you’re using the latest version.
  4. If there are new updates available, connect your TV to Wi-Fi and click “install now.”

 

Vizio TV turns off by itself

 

Why does my Vizio TV keep turning off by itself?

The reason why a Vizio TV persistently keeps shutting off by itself is either because you’ve enabled the sleep timer, because your TV’s power cord is damaged, or because your TV has overheated.

 

Causes

  • Overheating
  • Damaged power cord
  • The sleep timer is enabled

 

Overheating

If you use your TV for long hours, it will start heating up. If your TV keeps heating up for long hours, the internal hardware risks getting damaged. To prevent this from happening, your TVs are designed to shut down automatically when they heat up too much.

 

Damaged power cord

If your TV’s power cord is damaged, it will give your TV an unstable supply of electricity, causing it to shut down every now and then randomly.

 

The sleep timer is enabled.

Sleep timers are useful features that help you regulate your daily screen time. Sometimes, you can activate this feature without your knowledge. This gives the impression that your TV has shut down for no reason.

 

My Vizio TV turns off on its own- how do I stop it?

To stop your TV from turning off automatically, call customer support, disable the sleep timer or give your TV proper rest between long usage.

 

Rest

As a general rule, allow your TV to cool down for about 10 to 15 minutes each time you use it for consecutive hours. This will prevent your device from overheating, and, as a bonus, it will allow you to rest your eyes as well.

 

Call customer support

If your TV’s power cable is damaged, the best workaround for this problem is to call customer support or get an expert technician to help you out. Thankfully, these replacements aren’t expensive.

 

Disable the sleep timer

 

Here are the steps:

  • Use the remote to open the menu on your TV
  • Next, use the arrow keys to find the timer button
  • Go to the timer menu and find the toggle option to enable or disable timers
  • Disable your sleep timer.

 

Why does my Vizio TV backlight turn off?

The reason why a Vizio TV’s backlight might keep turning off is either that it is damaged or because your TV’s auto-brightness feature is on.

 

Causes

  • Damaged backlight
  • Auto-brightness is enabled

 

Damaged backlight

Your TV’s backlight is responsible for taking signals to form the mainboard, interpreting them, and then displaying the images and video you see on screen accordingly.

Without your TV’s backlight, you wouldn’t be able to see anything on display. So, if it has been damaged or has deteriorated somehow, it might turn off randomly on its own.

 

Auto-brightness is enabled

Auto-brightness is a pretty useful feature available in almost all smart TVs today. This feature saves power and the strain on your eyes by detecting ambient lighting and then adjusting the screen’s brightness to match it. °

 

While this feature works without problems most of the time, your TV can sometimes make an error while detecting the ambient lighting correctly- particularly when the lighting of your room suddenly and continuously changes.

In such cases, your TV may detect the wrong ambient light and mismatch the screen’s brightness. Particularly, when your TV detects an ambient light lower than it actually is, your TV’s screen will fade- giving you the impression that the backlight is turning off.

 

How to turn on my Vizio TV backlight?

You can turn your TV back on either by conducting a soft reset or by taking your TV to a technician, or by disabling the auto brightness settings.

 

Soft reset

  1. After turning it off using the remote, unplug your TV from the main socket.
  2. Now, with your TV still disconnected from the power, find the power button below the screen.
  3. Press the power button on your TV for at least 30 seconds. This will drain all excess power from the device.
  4. After this, leave your TV unplugged and let it rest for about 10 minutes
  5. Once the wait is over, come back, plug in your TV to the socket, and turn it on using the remote.

 

Take your TV to a technician.

 

One of the reasons why your TV’s backlight may not be working properly is that its backlight may be damaged. Unfortunately, if this is the case, you won’t be able to solve this issue on your own- you will need to either call customer support or get your TV checked by an expert technician. Backlight repairs/ replacements are sensitive.

If you try to attempt doing this on your own, not only will you void yourself of any warranty that may apply, but you will also run the risk of damaging other sensitive internals on your TV.

 

Disable auto-brightness settings

Follow these steps to disable auto-brightness on your TV and increase your TV’s brightness:

  1. Start by picking up your TV’s remote and pressing the home button
  2. This will open up a menu for you on your TV’s display
  3. Go to picture
  4. Find brightness settings and take it to your desired level.
  5. Then, find more picture
  6. Go to the backlight controls
  7. Find auto-brightness controls and switch them off

 

Why does my Vizio TV blink before turning off?

The reason your TV blinks before turning off is that one of the cables connected to your TV has either deteriorated or is loosely connected to your TV’s port.

 

You need to routinely check whether the cables (especially the HDMI cable) connected to your TV are securely placed in your TV’s ports. This is because loose cables send mixed and interrupting signals to your TV’s main board. This, in turn, will cause your TV to blink before it turns off. If this issue isn’t resolved quickly, you risk damaging your TV’s motherboard.

 

In any case, when you’re facing issues with your TV’s cables, conduct a cable reset to solve the problem. If you’re facing an issue with your TV’s ports, take it to an expert technician to see what your options are.

 

The steps for a cable reset are:

  • Turn off your TV
  • Take out the power cable from the socket
  • Take out all connected cables from your TV
  • Clean their ports and ensure that they’re free of damage
  • Plug them back in
  • Start up your TV

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