(SOLVED) Why Does my LG TV keeps Switching OFF?


My LG TV keeps switching off- Why?

LG TVs automatically switch off either because there is a cable issue, a power supply issue or outdated software.

 

Causes:

  • Cable issue
  • Power supply issue
  • Outdated software

 

Cable issue

Loosely connected cables or damaged cable ports can send mixed or fluctuating signals to your TV’s mainboard. This results in your TV glitching up from time to time, and it may eventually lead to your TV switching off by itself mid-use.

 

Try conducting a cable reset to resolve your issue. While doing so, make sure you check whether the cable ports of your TV are still intact. If you see any signs of damage or deterioration, get your TV looked at by an expert.

 

Power supply issue

Power supply issues can result from many things. It could be because you’re getting insufficient or unstable power from the main supply, because the power plug is loosely attached to the main socket, or because the power cable is faulty.

 

Whatever the root cause may be, when your TV receives an unstable or insufficient supply of power, it stops functioning normally. When the power deficiency becomes severe enough, your TV will shut down on its own. A good way to resolve this issue is by conducting a power reset on your TV.

 

Outdated software

Software updates come with a lot of improvements and bug fixes on older versions. So, if a new update is available, but you haven’t upgraded your TV’s software, you will have to face the bugs and glitches present in your (older) version.

 

To resolve this problem, simply head over to your TV’s settings and see whether any new updates are available. If there are, connect your TV to the Wi-Fi and install them. We also recommend turning on automatic updates in the settings to save you this hassle in the future.

 

LG TV keeps switching off

 

How do I stop my LG TV from switching off randomly?

You can prevent your LG TV’s automatic switch-off problem either by updating the software, conducting a power reset, or conducting a cable reset.

 

Software update

Here’s how you can manually check and update your TV’s software:

  1. Use the remote’s SMART or home button to get to the settings
  2. Find all settings
  3. Go to support
  4. Go to software updates
  5. See if there’s an update available
  6. If there is, click install now

 

Power reset

Use these steps to conduct a power reset:

  1. Turn the TV off via remote
  2. Unplug it from the main power supply
  3. Press down on your TV’s power button for at least 30 seconds
  4. Leave your TV for 15 minutes (still unplugged)
  5. Come back and plug your TV back into the socket
  6. Turn it on

 

Cable reset

Follow these steps:

 

  1. Find your TV’s remote and use the power button to turn off your TV.
  2. Now, unplug the TV’s power cord from the main supply.
  3. Next, remove all cables connected to your TV (especially the HDMI cable).
  4. Clean the cables and their respective ports.
  5. Check whether the ports have deteriorated in any way.
  6. If you find that your TV’s cable ports are damaged, call customer support or an expert technician.
  7. Check whether the cables have deteriorated in any way.
  8. If you find that your TV’s cables are damaged, replace them.
  9. Fit the cables back into your TV securely, Turn the TV on, and see whether the issue has been resolved.

 

 

Why does my LG TV switch off on its own?

If your LG TV persistently switches off on its own, it is because your TV has been overheating for a long time.

 

TVs nowadays are designed to protect themselves from permanent damage caused by overheating. If your TV didn’t shut down while overheating, the heat would potentially be able to damage other sensitive internals of your TV, i.e., the mainboard or the backlight panel. Overheating typically occurs if you use your TV for several consecutive hours a day or if you put an intensive workload on your TV, i.e., play high-resolution media.

 

 

How can I prevent my LG TV from switching off on its own?

To prevent LG TVs from switching off on their own, protect them from overheating by giving them regular breaks between long-term use.

 

TVs are made for long usage, but everything has a limit. After this, it will definitely start heating up and pose a risk to other internal hardware. To prevent this from happening, a good rule to follow is to give your TV regular breaks in between long usage. This will not only allow your TV to cool down for the next long usage but also give you time to rest your eyes and connect back to the real world.

 

My LG TV’s backlight keeps shutting down- why?

The reason why your TV’s backlight keeps shutting down is either that you’ve enabled the auto-brightness feature in the settings, because your TV’s backlight is damaged, or because your sleep timer is enabled.

 

Auto-brightness

Auto brightness is a pretty useful feature present in most smart TVs today. However, as with any technology, it can sometimes miscalibrate or malfunction. Particularly, this issue arises when your TV makes an error in detecting the ambient lighting of your room. When it detects lower ambient light than what is actually the case, it dims down the screen to adjust. This is when your screen can appear too for you to see anything.

 

A sleep timer is disabled.

Sleep timers are pretty helpful in letting you control your TV screen time every day. However, if you activate them by accident, or if someone else activates them without your knowledge, you will get confused when the timer runs out, and your TV automatically goes blank.

 

Damaged TV backlight

Of course, there’s always a possibility that your TV’s backlight is damaged. This typically happens due to overheating or excessive force.

Either way, in these cases, you have to call customer support or an expert technician to safely replace your TV’s backlight.

Do not try to fix your TV’s backlight (or replace it) on your own. You will void your warranty and risk permanently damaging other internal hardware.

 

How can I turn my LG TV’s backlight back on?

To turn your TV’s backlight back on, disable auto-brightness in the settings, increase the brightness, or call customer support for repairs.

 

Disable auto-brightness

Here are the steps:

  1. Click the SMART or home button on the remote.
  2. Find and open the settings menu.
  3. Go to Advanced settings options.
  4. Find and open Picture settings
  5. Toggle the energy-saving mode off
  6. Toggle the ambient light/ auto-brightness feature off

 

Disable sleep timer

Here are the steps:

  1. Click the SMART or home button on the remote.
  2. Find the clock option on your TV.
  3. Check whether the date and time are in sync (if not, update them manually)
  4. Toggle the sleep timer option off (or increase its duration through the same menu

 

Call customer support for repairs.

If none of these solutions seem to do the trick, try calling LG’s customer support to help you out with this problem.

Usually, in such cases, the problem arises from a damaged backlight panel, and the only way around it is by replacing it with a new one.

 

You could also call an expert technician for the job, but we recommend doing things the official way so that you aren’t deprived of your warranty (if it applies).

 

Whatever happens, do not try to replace the panel on your own.

 

You will risk damaging other sensitive internals.

 

My LG TV’s screen blinks before it shuts off- Why?

Your LG TV’s screen blinks before it shuts down because there is an issue with one of the cables connected to your TV- especially the HDMI cable.

 

Peripheral devices use cables to physically connect to your TV. If the cable connecting your devices is damaged or loosely connected, or if your TV’s receiving port is damaged, your TV will get mixed and interrupting signals from these peripheral devices.

 

These signals can confuse your TV’s mainboard and cause annoying glitches, for example your TV’s screen blinking before it powers down.

 

Thankfully, there is a very simple workaround for this problem. All you need do is successfully conduct a cable reset on your TV (or call an expert if the port is damaged), and you’re good to go.

 

Cable reset

Follow these steps:

  1. Find your TV’s remote and use the power button to turn off your TV.
  2. Now, unplug the TV’s power cord from the main supply.
  3. Next, remove all cables connected to your TV (especially the HDMI cable).
  4. Clean the cables and their respective ports.
  5. Check whether the ports have deteriorated in any way.
  6. If you find that your TV’s cable ports are damaged, call customer support or an expert technician.
  7. Check whether the cables have deteriorated in any way.
  8. If you find that your TV’s cables are damaged, replace them.
  9. Fit the cables back into your TV securely, Turn the TV on, and see whether the issue has been resolved.

 

Call customer support

If you find that your TV’s cable ports have been damaged somehow, call customer support immediately, or get an expert technician to replace them for you. We recommend calling LG’s customer support so no warranty issue arises in the future.

 

In any case, don’t try to replace your TV’s ports yourself- you will risk causing permanent damage to your device’s internal hardware.

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