LG TV Brightness Keeps Changing (Easy Fixes)

David Hughes
By David Hughes 14 Min Read

Ever noticed how your LG TV seems to have a mind of its own, switching from super dark to super bright all of a sudden? It’s like it’s playing a game of light and dark, and you’re left wondering what’s going on.

Well, don’t worry, you’re not alone! This happens to a lot of people, and there are several reasons why your TV does this little light show. We’re going to dive into some of the most common causes and, more importantly, how you can fix it.

One big reason, especially with the newer LG TVs (you know, the ones with those fancy OLED screens), is something called an auto-brightness feature. This feature is like a superhero for your TV screen, protecting it from getting ‘burn-in’. Burn-in is when an image gets stuck on your screen, like a ghost haunting it. But sometimes, this superhero feature can get a bit too enthusiastic, making your TV look too dark or too bright at times.

In the next sections, we’ll explore more about why this happens and what you can do to get your TV just the way you like it – not too dark, not too bright, but just right.

How Do I Stop My LG Brightness From Changing?

Is your LG TV acting like a rollercoaster, with its brightness going up and down all the time? Let’s put a stop to that! Here are a few reasons why this might be happening and some easy steps to fix it.

  1. The “Auto Power Saver” Mode: If your LG TV is on the APS (Auto Power Saver) setting, it’s trying to be helpful by saving energy. But sometimes, it gets a bit too excited and changes the brightness when you don’t want it to.
  2. Using Your TV as a Computer Monitor: Are you using your TV as a big computer screen? Cool! But sometimes, this can make the brightness act a bit weird.
  3. A Grumpy HDMI Port: Just like us, HDMI ports can get grumpy sometimes. If your TV’s HDMI port is having a bad day, it might mess with your screen’s brightness.
  4. Naughty HDMI Cable: Similar to the HDMI port, if your HDMI cable is having trouble, it can send mixed signals to your TV, causing the brightness to change unexpectedly.
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Now, let’s jump into some superhero steps to rescue your TV from this brightness dilemma!

Step 1: Disabled APS

Ever wonder why your LG TV screen keeps getting dimmer, especially on sunny days? It’s like your TV is trying to play it cool in the bright light. This happens because of a clever feature called Auto Power Saver (APS) mode. It’s like a smart robot inside your TV that checks out how bright your room is. If it thinks the room is too bright, it dims the screen to save energy. Pretty neat, right?

But sometimes, you might not want your TV to keep changing the brightness. Maybe you’re watching a movie and suddenly, it’s like the lights go out in the most exciting part! If that’s bugging you, don’t worry. You can easily tell your TV to take a break from saving energy and just stick to one brightness level.

In the next part, I’ll show you the super-simple steps to turn off APS mode on newer LG TVs and the Energy Saver on older models. It’s like giving your TV a little instruction manual to follow your rules!

#1 Disabled APS (Newer LG TV Models)

Is your TV dimming like it’s playing hide-and-seek with the light? That’s probably the Auto Power Saver (APS) mode trying to save energy. It’s pretty smart and can tell how bright your room is. If it thinks your room is like a sunny beach, it might dim your screen to save power.

Wondering how to get your TV to stop doing this? Here’s the trick for newer LG TV models:

  1. Grab Your Remote: Look for the ‘Settings’ button. It’s your magic wand in this case.
  2. Dive into the Picture Menu: Click on ‘Settings’, then find ‘Picture’.
  3. Change Modes: You’ll see a bunch of options. Look for APS mode and change it to something else. Just make sure APS isn’t the chosen one!

#2 Disable Energy Saver (Older LG TV Models)

Got an older LG TV? No worries, the steps are just as easy:

  1. Remote in Hand: Press the ‘Settings’ button.
  2. All the Settings: Click on ‘All Settings’, then find ‘Picture’.
  3. Energy Saver Off: Look for ‘Energy Saver’ and set it to ‘Off’.

And voilà! You’ve just told your TV to stop messing with the brightness.

Step 2: Update Your LG TV Software

Think of updating your LG TV’s software like giving it a fresh dose of brainpower. Just like how you learn new things, your TV needs updates to fix any little bugs and learn new tricks. Sometimes, these bugs can make your TV’s brightness go wacky, or even show weird colors like a purple-tinted picture. Keeping your TV’s brain – I mean, software – up to date can stop these problems from happening.

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Most LG TVs are smart enough to update themselves if they’re connected to the internet. But, just like us, they might forget or get interrupted. That’s when you might start noticing issues, like the screen brightness changing on its own.

How to Update Your LG TV Firmware

Updating your LG TV is easy-peasy and really important for a bunch of reasons. It’s like giving your TV a health check-up to make sure it’s running smoothly, has the newest apps, and is protected against sneaky security risks.

Let’s Get Updating!

  1. Start Your TV: Make sure your TV is on, then grab your remote and press the ‘Settings’ button.
  2. Find the Settings Menu: You’ll see a bunch of icons on the left side of your TV screen. The layout might be a bit different depending on your TV model.
  3. Go to All Settings: At the bottom of those icons, there’s an ‘All settings’ button. Click that to open up a whole new world of options.
  4. Seek Out Support: In the new menu, look for an option that says ‘SUPPORT’. That’s where the magic happens.
  5. Software Update Time: Now, select ‘SOFTWARE UPDATE’. Here, you can turn on automatic updates (so your TV can update its brain while you sleep) and check for any new updates.
  6. Restart for a Refresh: Once the updates are done, give your TV a quick restart. It’s like waking up from a good nap – everything works better!

Step 3: Change Your Selected Input Device/Source

Think of your TV like a detective’s office, and you’re the detective. Sometimes, the brightness problem isn’t the TV itself, but a sneaky external device causing trouble. It’s like having a mischievous guest in your TV’s house!

Switching Inputs: The Detective Work Begins

  1. Grab Your LG Remote: It’s your detective tool. Look for the button that changes inputs. It’s your key to switching between different devices connected to your TV, like a DVD player, cable box, or Firestick.
  2. Press the Magic Button: Once you press it, you’ll see a list of all the gadgets (inputs) hooked up to your TV.
  3. Investigate Each Input: Navigate through the list and check if the brightness issue is still there when you switch between different devices. This is like checking each room in a house to find where the noise is coming from.

Finding the Source of the Problem

  • If the brightness issue is in every ‘room’ (input): It’s likely that your TV itself is the source of the mystery.
  • If it’s just one ‘room’ (input) causing trouble: Time to zoom in on that device or port. Maybe it’s the settings of that device, or perhaps the port it’s connected to is having a bad day.

Understanding Input/Output (I/O) Issues

“Input/output” (I/O) is all about the different spots (ports) on your TV where you plug in cables, like HDMI, USB, etc. These ports can get tired or damaged, especially if they’ve been used a lot.

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Example of an I/O Input Issue:

Let’s say the brightness issue only happens when you’re using HDMI 2. This might mean that the HDMI 2 port is having issues or the HDMI cable is not feeling well.

Contact LG Support

Imagine you’ve tried everything to solve the mystery of your LG TV’s changing brightness, but nothing’s worked. It’s like a puzzle with a missing piece. That’s when it’s time to call in the experts – the LG support team!

Think of LG support as your TV’s superhero team. They’re the ones who know all the secret tricks and solutions.

Why Contacting LG Support is a Smart Move:

  1. You Might Have a Super-Sneaky TV Issue: Sometimes, the problem is so hidden that only the LG experts can find it. It could be that your TV is like a rare gem with a unique problem.
  2. Get Expert Advice: The LG team might have some clever ideas or special tools to figure out what’s going on with your TV.
  3. Safety First!: Before you try any wild DIY fixes that might make your TV go “Oops!”, talking to LG is a safer bet. They’ll make sure you don’t accidentally do something that could void your warranty or, worse, break your TV for good.

How to Contact LG Support

Reaching out to LG support is easy. You can find their contact information on their website, in your TV’s manual, or even on the box your TV came in. It’s like having a direct line to TV geniuses!

Remember, it’s always better to ask for help than to try something risky. Plus, who knows? You might end up learning some cool TV tips and tricks from the pros themselves!

Wrapping Up: Solving the LG TV Brightness Mystery

Dealing with a TV that keeps changing its brightness can be super annoying, like a flickering light in your room. But don’t worry, it’s usually not a sign that your TV is broken.

The secret to fixing this brightness rollercoaster is often hidden right in your TV’s settings menu. It’s like having a treasure map where ‘X’ marks the spot for solving the problem.

A little bit of tinkering with the settings, and voilà! You’re likely to get your TV’s brightness to behave just the way you want. It’s like teaching your TV to follow your rules.

We really hope these tips and tricks have helped you tame your LG TV’s brightness. Now you can get back to enjoying your favorite shows and movies without any unexpected light shows!

Remember, your TV is a pretty smart gadget, but sometimes it just needs a little help from you to work perfectly. Happy watching!

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Meet David, the tech blog's brilliant author and copywriting expert. With a profound passion for technology, David's captivating articles on tech, Android, Windows, internet, social media, gadgets, and reviews are the epitome of excellence. His expertise in crafting compelling content combined with his love for all things tech make him a formidable force in the industry.
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