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LED-backlit LCD TVs typically come in one of two sub-types of panels: Vertical Alignment (VA) or In-Plane Switching (IPS). VA panels tend to have much high contrast ratios, and therefore better black uniformity. IPS panels, on the other hand, have worse contrast ratios and suffer from more backlight issues that can affect black uniformity, including "IPS glow", which is a kind of "glow" effect that can be seen in the corners of IPS screens.

LED-backlit LCD TVs are prone to black uniformity issues, but OLED TVs can produce virtually perfect blacks because their pixels are self-emitting, and therefore don"t have the same limitations caused by improper backlight implementation. That means they don"t suffer from clouding or flashlighting as LED TVs do.

Poorly designed backlight placement. The type of backlight and its position directly affects the uniformity of the screen. The worst uniformity can be found on edge-lit LED TVs, because the LEDs are only on the edge of the screen. Full-array LED TVs have good uniformity because their LEDs are spread out across the whole screen. Some edge-lit TVs have great uniformity. You can learn more about different backlights here.

Non-uniform frame pressure. Both the LCD screen and the diffuser layers are somewhat flexible. A slight difference in pressure on the frame of the television can change the uniformity of the picture. On some televisions, this can be fixed (see below).

Flashlighting can sometimes be fixed on some televisions. If the flashlighting is caused by pressure from the TV"s frame, you can adjust it by slightly loosening or tightening the screws behind the edge of the screen. Some TVs don"t expose the screws, however, so this won"t always be possible. You should also keep in mind that a small change in the tightness of a screw can have a big impact on the uniformity of the screen, so be careful if ever you do try this step. While this can fix the issue, we don"t recommend it unless you know exactly what you"re doing, as it may cause more problems than it solves.

For clouding, there"s a pretty simple fix that—while not guaranteed—can have good results. Power on the TV and display a black image. This will allow you to see the lighter spots on the screen. Next, take a soft cloth and massage those brighter spots to improve the uniformity. You should only apply very gentle pressure, just barely touching the screen. You can also try a few different stroking patterns. If you are patient enough, this works surprisingly often, especially on edge-lit TVs, although you should be very careful to avoid damaging your screen.

Black uniformity refers to how evenly a TV can display black across the screen, especially when displaying a bright object over a dark background. It’s important when watching dark scenes in a dark room, and while most people shouldn’t notice black uniformity issues like flashlighting and clouding, they can become more apparent when the issues are especially bad. You won’t need to worry about these problems in rooms with lights on, though. For each TV, we take a photo of a black frame to capture the black uniformity, and then we calculate the color values of the pixels to find the standard deviation of the uniformity. We then do the same with local dimming enabled.

You may be able to remove flashlighting (to some degree) by tightening the screws of the TV’s frame. This can have pretty dramatic effects on the picture, though, so you should be very careful when attempting this. For clouding, gently massaging problem areas with a soft cloth often does a good job of fixing bad uniformity. In the end, the safest bet may be to simply return or exchange your TV if you can, since uniformity varies between individual units.

dark lcd screen problem brands

I had this problem too... and fixed it in about 10 min. I searched the internet for this problem and found many forums with pretty much the same resolution... REPLACE TV. I find it interesting that in almost every single case I read over the last 24 hours... no one... absolutely no one recommended a simple Problem Determination (PD) procedure to quickly determine if the issue was in the TV or outside the TV.

My Curved Samsung UN55JU6700 among several other devices... is connected to an Xfinity HDR and through HDMI cables. So.... the first thing I wanted to do was to see if the problem went away if I changed channels... it did not. Then, would the issue move when using another HDMI source...

I turned on my APPLE TV and switched to that as the source. I immediately noticed that the issue appeared to go away... so for grins, I tried my DVD player... and still the problem did not return...

Now I know its either the HDMI cable feeding the signal or the xFinity box itself... so I tried a different cable and the problem did NOT go away this time... Now I"m highly suspecting the Xfinity DVR device. I powered off the HDR but the problem still remained ... No I"m thinking Im going to have to spend an hour on the phone with a tech that knows less then I do... or spend an hour or two at the Comcast store waiting for a replacement DVR. SO BEFORE I did that, I tried one last PD step ... I decided to UNPLUG the DVR and let it do a complete POWER ON RESET ... in case something got hosed during the last firmware update.... 10 minutes later... my SAMSUNG is working flawlessly once again. DONE, FIXED (at least in my case).

dark lcd screen problem brands

Are you having any problems with your TV? Leave your worries! Check on eligibility for warranty and feel free to call TUSA Service Center for our Same-Day In-Home service. 180-day warranty!

Verify if the surge protector or an extension is turned on in case a power cord is connected to these devices. If a TV screen appears black, plug another device into the socket to check whether this device is getting power from the outlet. If power is supplied to the outlet it means that your TV is powering on and a picture issue should be revised. You need to make a call to the TUSA Service Center and our technician will soon revive your TV.

There are many possible problems in case your TV is powered but a TV screen goes black and there is no sound. All you can do in this case at home is to reset your TV to the factory defaults. This procedure is described in the User Manual of your TV.

To double-check this failure press a MENU button installed on the TV to see if TV´s MENU appears on the screen, In case the MENU appears, verify that all video connections are well secured and to appropriate jacks on your TV. If the result is negative, you can trigger the MENU to reset your TV to the factory defaults.

In case neither of the above steps resolved the problem of the TV, you are welcome to get urgent assistance with this problem by contacting the TUSA Service Center.

Sometimes when watching TV, annoying situations arise when a TV screen fades off to black. That is to say, the TV screen goes black at random times and appears to be off but the sound is available and the power light is still illuminating. A troubleshooting procedure may differ for a variety of TV brands but generally will work the same to fix the problem and is as the following:

Connect a different device to the TV or the same device to another TV. The device being used (Ex. Blu-Ray/CABLE BOX) may cause the black screen issue.

A hidden fault within HDMI cable – Replace with new High-Speed HDMI 2.0 cable. Replace the HDMI cable as it may have a short or another defect which causes the black screen issue.

dark lcd screen problem brands

After a long, hard day, you finally sit down to catch up on your favorite show. But when you hit the power button on your remote control, your TV screen stays black! You try pressing the remote’s power button again and again from every angle, but still, your TV has no picture. If this sounds familiar, you’ve likely fallen victim to one or more TV screen issues.

What causes a TV screen to go black? Software issues, loose connections, or backlight problems are usually behind black TV screens. Learn about each of these causes and get tips for troubleshooting them so you can get back to relaxing with your favorite TV shows, movies, and video games.

If your TV screen is black and there’s no sound, you’ll want to check for an LED light or a small indicator light that tells you the TV has power. If there is no power to the TV while it is plugged in, there may be an issue with the outlet or fuse box in your home. However, if the TV is on but the screen is black, the problem could lie with your TV’s software.

Unplug the TV from the wall, and, if possible, remove the power cord from the back of the TV to perform a soft reset. Wait 30 seconds, and plug the TV back into a working outlet to test it again. If you’re still having screen issues, you might want to bring in an expert — they’ll know how to fix your TV’s black screen.

If your TV screen goes black but the sound still works, the first thing to check is the input source to ensure it is turned on and operating correctly. This includes external devices like cable boxes, video game consoles, laptops, and streaming devices. Once you’re sure the input source is working properly and you have the right input settings, check the cable connections. In many instances where the TV screen is black but the audio works, poor cable connections could be the issue.

Whether you’re working with an HDMI cable, RCA (usually yellow, white, and red cables) set up, or another type of connection, you need to ensure the cables are seated properly and firmly into their connection ports. With a good connection, the cable shouldn’t feel loose or easily disconnect when pulled on or moved around. If all your cables have a snug fit but the problem persists, try connecting the device to another TV. If your TV screen is still blacked out, you may need new cables.

Some TV displays, such as LCD screens, use a backlight to illuminate the picture. If the backlight burns out or stops working, it will result in a blank TV screen.

To check your TV’s backlight, make sure your TV is on. Then, turn off the lights in the room and shine a flashlight on the screen. If you can see a picture with the flashlight, then your TV’s backlight is likely burnt out.

While you might be eager to learn how to fix a black-screen TV, a broken backlight does not come with an easy solution. The backlight will need to be replaced, and it’s best to get help from a professional with this task.

You’ve run all the tests, checked all the ports, and ensured your TV has power, but your TV screen is still black! There could be a more complicated (and expensive) issue, so it might be time to ditch your old TV for an upgrade.

dark lcd screen problem brands

A black screen on an Android can be frustrating. If you can tell your Android phone is on, but the screen is black and won"t respond, there are a few things you can do that might get it working again.

Wait until the batteries die completely and the phone shuts down and then recharge the phone, and restart it after it"s fully charged. If there is a critical system error causing the black screen, this should get your phone working again.

Gently, but firmly press your phone from both sides, squeezing the front and back together. If there"s a loose LCD connection, this could help reseat the connection and get the screen working again. If this works, consider taking the phone to an authorized service center to have them firmly reseat the LCD cable.

If your phone is in a case, remove it from the case before you start this process so that you can accurately gauge how much pressure to put on your phone without breaking the screen.

Plug in phone, wait five minutes, and then try to do a Force Restart. This ensure the phone has enough power to restart, and restarting could clear any errors that might be affecting the screen.

If you have one, remove the stylus and see if it causes the screen to come on. If it does, navigate to Settings > General management > Reset and then choose Auto Restart and schedule a time for your phone to restart. You"ll have to wait until this time to see if an automatic restart fixes your problem.

Alternatively, you could also choose Factory data reset from the screen to completely reset your phone back to factory specs. This can be useful if you"ve installed a corrupt app that is affecting your display.

Reboot your phone into Safe mode. Safe mode may allow you to navigate the phone to restart it, clear the cache (more on that below), or perform other tasks that could help fix the black screen problem.

dark lcd screen problem brands

That said, many forget that computers require regular ‘check-ups’ too, done mainly by undergoing scheduled scans or running performance-based apps to evaluate their overall condition. Though some might take this lightly, a compromised computer will not work as efficiently as before and, in certain cases, can lead to the dreadedblack screen of death.

Simply put, a black screen of death is when acomputer is stuck on a blank, black screen. The commands or button prompts do not work, and the PC becomes unresponsive.

In worst-case scenarios, constantly forcing a computer to shut down can lead to file corruption or hardware damages, which are primary indicators for you toconsider buying a new laptop/desktop. Other minor issues can also occur, but different factors cancause computers to slow down, so a complete system diagnostic is usually the best way to identify problems.

If your computer consistently freezes at a black screen, you should identify the main issues immediately before any long-term harm can be inflicted on your PC.

Most of the time, a computer black screen occurs due to recent changes made to the PC. Check if it’s one of the following reasons that’s making your laptop screen black:

Sometimes, a black screen occurs due to an interrupted connection between the computer and its display monitor. This often happens to desktop users accidentally dislodging the cable from its proper port, either on the computer case, the monitor itself, or both.

A faulty display device or video adapter can also prevent a computer from displaying images, prompting a black screen. This is often the case when the PC produces sounds normally but cannot project any visuals.

Adisplay device is an external apparatus that produces visual output, such as an LCD monitor. On the other hand, avideo adapter is dedicated hardware- such as a graphics card - that creates those images before sending them to a display device.

A complete system update or new software installation can also force a black screen error. This usually happens due to conflicting commands or coding that might disrupt the computer’s main programming, interrupting some critical processes as a result.

The ideal fix can be applied by identifying the most likely causes of the computer’s black screen prompt. This is important because some fixes require tweaks to be made to the computer’s system, including the BIOS (Basic Input/Output System), depending on the issue.

Consider external causes first, such as a damaged display cable, before exploring technical possibilities. With that in mind, here are some possible ways for you to resolve a frozen black screen on a computer:

If the computer freezes at a black screen again, the last resort is to forcibly shut down the PC by pressing and holding the computer’s power button for around 10 seconds.

If it’s still stuck on an empty, black screen, acomputer restart inSafe Modewill be required to safely revert the display adapter’s driver to a previous version.

After a couple of forced shutdowns - due to failure to boot up properly after getting stuck at a black screen - the computer will automaticallyenter itsAutomatic Repairphaseduring the next restart.

After failing to start multiple times, the desktop/laptop will automatically enter theAutomatic Repairscreen on the next boot up/restart from a manual shutdown.

It is hard to know which black screen fix is the right solution for your PC without identifying its probable causes first. In certain circumstances, users might even be forced tomake changes inside the computer’s BIOSinstead, which can be intimidating for some.

Acomputer boot by using a USBcan also be performed, especially if the PC still fails to resolve its black screen issue. However, it might be best to consult a professional technician to avoid risking damage to the computer.

dark lcd screen problem brands

While modern TVs continue to bring more entertainment edge into our living rooms, they can never really come without issues. One common issue affecting LCD/LED TV owners is clouding. This problem is more apparent in Televisions with fluorescent backlighting and can affect even the top-rated TVs on the market.

TV display settings can amplify and reveal screen clouding. However, you can make a few simple adjustments to fix the issue, improving your TV screen quality.

Clouding occurs when there is a lighting leak to the visible portions of the screen, leading to uneven blacks. This phenomenon appears in some areas of the screen where they seem greyer than black in darkly lit scenes, along with variable brightness in regular pictures.

Clouding is the uneven backlighting typically caused when lighting bleeds into the visible part of the TV screen. This will give the display screen an appearance as if there is a white shadow or clouding during dark scenes. Fortunately, this is a common effect with new TVs and in most cases gradually decreases with usage. Additionally, if the backlight of your tv is giving you issues, you can check out this article on how to fix the backlight on TV.

Your TV display settings can amplify and reveal screen clouding. However, you can make a few simple adjustments to fix the issue, improving your TV screen quality.Reducing the TV backlight level

Before making these adjustments, ensure that any smart sensor or “iris” features on your TV are turned off. These features are designed to adjust the TV screen brightness automatically depending on how much light is in the room. When these features are activated, they affect the TV user’s ability to reduce the clouding effect adequately. The problem may also be compounded when you use these energy-saving tips for televisions, which may affect the display.

Sometimes the TV screen is clouded by dust and debris, and when turned on, it could have a cloudy appearance. Use a soft clean, microfiber cloth. Take note of the TV screen texture and look for foreign spots caused by debris or dirt on the exterior.

If you notice a dark area on the screen that is similar to a clouding effect, adjusting your TV display setting is the best resolution. After making the adjustments, test your LED TV to ensure the changes have worked. If you are having black spots on your Tv then you should not worry much, simply try the black spot on the tv screen repair and everything should be alright.

Sometimes when clouding occurs on your TV, it could be a sign of screen damage. This can be caused by a drop impact or cracks on the LED display. If this is the case, your TV will require an LED screen repair or replacement service by a professional.

Clouding is the uneven backlighting typically caused when lighting bleeds into the visible part of the TV screen. This will give the display screen an appearance as if there is a white shadow or clouding during dark scenes.

Clouding appears in some areas of the screen where they seem greyer than black in darkly lit scenes, along with variable brightness in regular pictures.

Your TV display settings can amplify and reveal screen clouding. However, you can make a few simple adjustments to fix the issue, improving your TV screen quality by; reducing the TV backlight level, changing the power saving setting, and turning on the light sensor.

Sometimes when clouding occurs on your TV, it could be a sign of screen damage. This can be caused by a drop impact or cracks on the LED display. If this is the case, your TV will require an LED screen repair or replacement service by a professional.

dark lcd screen problem brands

The LCD screen is vital for operating the printer. Should you encounter any kind of trouble, such as a dead screen, corrupted text, or other issues, please refer to the guide below.

First of all, unscrew the LCD screen from the printer frame, remove both M3x10 screw holding it the LCD board in the plastic casing, and remove it from the casing. See if the problem still appears when the LCD is not pressed by the casing.

Firmware updates are necessary to keep your printer up to date. However, the installation of incorrect firmware can lead to letter corruption on the LCD screen. There"s an easy fix, though:

There is a small chance the printer"s LCD screen can glitch out by electrostatic discharge when inserting the SD card. Try to turn the printer off and on again.

This problem usually appears only on user-assembled printers. If your printer"s LCD screen remains blank or displays corrupted symbols after you turn on the printer, there is a chance it is caused by incorrect wiring. Follow these steps to fix the issue.

If you suspect that the LCD ribbon cables connectors are not firmly seated in the slots, disconnect the LCD ribbon cables and check the slots for any bent pins. If there are bent pins, you can use tweezers to fix them. However, be very careful not to break the pin(s) completely.

If none of the above resolved the problem, turn the printer off again and try to unplug both of the cables, lay them down on a flat surface and gently stretch them. Then plug them back in and turn on the printer.

dark lcd screen problem brands

Black screen on MacBook Pro? It"s the situation that you hope will never happen, and when it does, it often seems to be at the worst possible time. We rate Apple"s MacBooks among the best laptops for creatives, and we"ve found them to be very reliable on the whole. But as with any laptop or desktop computer, sometimes things can go wrong.

A lack of any sign of activity on your MacBook Pro screen is perhaps one of the most worrying issues you can face when booting up your device. You"re likely to immediately start to worry about how much it will cost to fix, but let"s not panic yet. Take a deep breath, and try the tips below before you fork out for a repair or take a trip to your nearest Apple Authorised Service Provider or store.

We won"t deny that a MacBook Pro black screen can sometimes be bad news, but often it"s not actually such a big deal and can be fixed quite easily. Many of our writers and creative contributors use MacBooks day in, day out, so it"s a problem we"ve come across a few times. Below, we"ll suggest the series of steps that we usually try if we"re faced with a black screen on MacBook Pro.

A blank screen of any kind, (black, grey, or blue), will appear once or more when you startup of your device, but if your MacBook gets stuck on a blank screen, these steps may just bring it back to life, whether you"re using the laptop"s own screen or an external display. On that note, if you"re looking for a bigger screen, see our pick of the best monitors for MacBook Pro. We also have a roundup of the best MacBook Pro deals in case you decide it"s time to upgrade your laptop.

Any number of issues can cause a MacBook Pro black screen. Sometimes it can happen waking your laptop from sleep, and sometimes it can be caused by broke disk permissions or a software error. Below we"ll outline the steps to try if the problem is a black, or otherwise blank screen, on your MacBook Pro"s own display. If your problem is with an external monitor, skip to how to fix a black screen on a MacBook Pro external monitor.

OK, so you"ve probably done this, but just to be sure check the power. It can be a big relief to discover the issue is something as simple as this. If you"re running on battery, connect your laptop to its charger just in case the battery has run down. Check the power indicator light shows so you can rule out a faulty power cable. It’s also possible that you (or your cat) might have unintentionally hit the brightness keys on the keyboard at some point at that you screen is simply dimmed. Hit F2 or use the control bar to try increasing the brightness on your MacBook Pro.

Peripheral devices like printers, keyboards, external drives, mice and trackpads can all cause potential start up problems, so if the problem"s still there make sure your Mac is disconnected from anything other than your charging cable and adapter.

On an Intel-chipped MacBook Pro, press and hold the power button for about 10 seconds, then press and release the power button and immediately press and hold Command + R until you see an Apple logo or other image. If you still see a blank screen after about 20 seconds, it"s time to move on. If this does recovers your screen, it"s worth running Disk Utility to check for errors. If Disk Utility finds errors and repair them, restart your MacBook again afterwards.

This isn"t official from Apple, but years of MacBook lore claim that a particular key sequence can sometimes revive a non-reacting blank MacBook Pro screen. Press power button once, Press "S" (the sleep hotkey), and then hold the power button to perform a hard shut down. Wait 15 seconds and press the button to restart. We have no idea why this works, but plenty of people have vouched for it.

MacBook Pro Safe Mode allows you to start you MacBook without other launch agents booting up. This can eliminate the potential for issues with other apps and services interfering and preventing your screen from displaying correctly.

To boot into Safe Mode, power off and let your MacBook Pro sit for 20 seconds. Turn it on again and immediately hold down the Shiftkey. Release the Shift key when the login window appears. You should see "Safe Boot" in the upper right corner of the window. Sometimes you may be asked to login twice, and your computer may take a longer than usual to start while it carries out diagnostics. After it"s completely booted up, you can restart again in normal startup and see if the black screen is fixed.

The Mac"s Systems Management Controller (SMC) controls things like temperature, keyboard, display and fans. Resetting the SMC is another possible quick fix to resolve a black screen on MacBook Pro. Turn of your MacBook and unplug it for at least 15 seconds before plugging in again. Then, with the power still off, hold down Shift + Option + Control + the power button all together. Release the keys when your MacBook starts booting up.

The steps above should help you resolve a MacBook Pro black screen, but if your laptop"s own screen is working but an external monitor is blank, there are other things to try.

The black screen on a MacBook Pro external monitor may be caused by simply closing your laptop. By default, this automatically puts your MacBook Pro to sleep. If you want to be able to close the lid of your MacBook Pro but still use the laptop via an external monitor, you"ll need to change some settings. Go to System Preferences > Battery > Energy Saver > Power Adapter, and move the slider to Never. Note that you"ll also need to have a keyboard and either a mouse or trackpad connected to your MacBook Pro or it will still sleep on closing the lid.

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We use our iPhones for everything from work to staying connected to family, so it can be a huge hassle when it stops working. Despite their durability, iPhones can still break or malfunction and a common issue Asurion Experts see regularly is what"s called the "black screen of death."

Almost every electronic device has its own version of a "screen of death." Computers and laptops have the "blue screen of death" and game consoles have the "red ring of death." This phrase is used to identify issues that the device is facing that are serious enough to cause the device to become completely non-working, often needing professional intervention to repair.

In the case of the iPhone black screen of death, the device"s screen is blank and won"t respond to touch, but you can tell by vibrations or sounds that the phone is still functioning. This is an immensely frustrating issue to face because, without screen visibility or touch responsiveness, your iPhone is not much more than a vibrating paperweight.

When your technology works, your life does too. Asurion Experts have the tools and experience to help fix problems in more than 6,000+ devices, and the iPhone is no exception. While it"s true that many of these "issues of death" are serious malfunctions, very few of them are irreversible. Here are the tactics our experts recommend to diagnose and troubleshoot your iPhone"s black screen of death and get it working again.

Most often, a black screen of death issue can happen from damage to the screen during a bad drop or accident. If the components connecting the screen to the motherboard sever, the phone screen will be unresponsive. But the black screen of death can also happen because of software issues in the device. Malfunctions with an iOS upgrade or downgrade can potentially cause the issue, as well as complications from attempting to jailbreak or modify the firmware on your own.

No matter how the black screen of death in your iPhone occurred, there are a few troubleshooting methods that you can use to try to fix it or at least prevent the issue from permanently affecting the data or photos you have stored on the phone.

The very first troubleshooting trick to try is just making sure that your device is, in fact, a victim of the black screen of death. A drained battery can look just like this issue, so it"s important to rule that out first. Connect your device to a functioning power source, and wait for it to respond. If you see the Apple logo or another interaction on the screen, you"ve solved it. If you continue to see no response from the screen or the device vibrates as if it was charging, you know with certainty that you"re facing the black screen of death.

Malfunctions within app software can also cause iPhones to have the black screen of death. All apps are not created equal, and if your iPhones current software is not compatible with a particular app, you could get a screen malfunction. In this case, killing the app should enable your screen again. To do this, swipe up or quickly press the home button twice (if your phone still has one) to see all of your open apps. Swipe up on your recent apps to identify which is causing the malfunction and close it. With the app closed, you should be able to have full responsiveness on your screen again. If the problem persists or you can"t access your apps due to a blank screen, you"re likely dealing with a bigger issue.

If none of the aforementioned troubleshooting tips solve your iPhone"s black screen of death, it"s time to consider heavier duty fixes. iPhones have a special troubleshooting tool called "recovery mode" that allows a computer to diagnose and attempt to fix software issues.

If after these troubleshooting tips, you"re still left with the black screen of death, it may be time to consider a factory reset for your iPhone. Factory resets should always be the last thing you try because unless you have backed up your iPhone recently, you risk losing your data. But if a truly sinister bug in your system is stopping your screen from working, a factory reset could take care of it.