what causes lcd screen to go black manufacturer

Experiencing a black screen is perhaps the most frustrating thing for any TV owner, especially if you just purchased one of the best TVs for the bedroom, you’re exhausted, want to watch something before bed, and your TV won’t function properly. If you just turned on your TV and it has a black screen, it could point towards a malfunction. Black screens are pretty common; sometimes, the screen will go black, but the user can still hear audio playing in the background.

Sending your TV to a repair shop can be time-consuming and expensive, especially when you factor in the shipping and handling fees. Troubleshooting a black screen is relatively easy, and fortunately for you, we have outlined a step-by-step guide to help TV owners learn how to fix a black screen on their highly-rated TV.

For another guide to TV fixes, you’ll want to learn how to repair the TV main board, and what to do if you have to ask, why does my TV keep turning off? Or, if you use an antenna for over-the-air channels, we have a guide on rescanning for channels to ensure you get the most options.

Before rushing to your local TV repair shop, consider some simple troubleshooting steps to solve this common issue yourself at home. However, it is essential to note that some cases might need the TV owner to seek technical assistance from a professional. So, what causes a black screen? Additionally, if you are dealing with color-related problems, you can check out our guide on how to fix tv color distortion.

Issues with input devices: Sometimes, issues related to black screens are caused by source devices such as video consoles and cable boxes. To find out the problem, press the TV remote menu button. If the menu settings appear, the problem is with the source device. Additionally, devices connected to your TV could be a reason for a high-pitched noise coming from your TV.

Input setting issue: A blank screen can also be caused by an input setting issue. Most times, users experience black screens, it’s always due to the wrong input connection. Before turning on your TV, makes sure that the inputs are set correctly to avoid this problem.

Firmware updates: Smart TVs get regular over-the-air updates from the manufacturer. Your TV screen might be black due to an obsolete firmware version.

STAT:Smart TV technology is increasingly getting popular. In 2020, more than 70% of U.S households had access to a Smart TV. The most popular Smart TV operating system is Tizen and WebOS (source)

First, ensure that you have a proper cable connection between source devices like set-top boxes, video consoles, and your TV. This will help you understand if the problem is due to a connection or any other issue. Additionally, a loose cable could be the cause of a blue screen on your TV. Make sure the power cable and all HDMI cables are secure.

Countercheck on the source devices. Find out if your sources have a problem by pressing your TV remote menu button. If the menu setting pops up on the screen, your TV is fine.

Next, set up your inputs correctly. Poor connections will lead to a black screen, and setting up your devices correctly will solve the problem. Press the input button on your TV remote and navigate to the input setting section. Make sure all your inputs are set correctly. You can learn how to fix an HDMI port on tv if that is the problematic connection.

Some TVs come with a sleep timer or power saver feature that will turn off the screen when not in use or at a configured time. If there is more than one person in your household, a sleep timer could have been activated, which is perhaps why the TV screen is black. Navigate through your menu settings and turn it off. And be sure to keep your TV screen clean to ensure that the picture is clear from dirt too.

Before rushing to your local TV repair shop, consider troubleshooting the problem yourself at home. However, it is essential to note that some cases might need the TV owner to seek technical assistance from a professional.

TV black screens are commonly caused by cable connection issues, issues with input devices, or outdated firmware updates. Worst case scenario, the power supply board could have malfunctioned.

Some TVs come with a sleep timer or power saver feature that will turn off the screen when not in use or at a configured time. This will lead to a blank/black screen.

Black screens appear in the daily work of industrial LCD screens, what should we do? Don’t worry. black screen fault treatment method. Today, we summarize the reasons for the black screen fault treatment method by the failure of industrial LCD screens:

Check whether the power indicator on the host chassis panel is on and whether the power fan is rotating to determine whether the host system is supplied with power. Secondly, the multimeter is used to check whether the external voltage meets the requirements. If the voltage is too high or too low, it may cause the automatic shutdown protection of the main-machine power supply with overvoltage or Undervoltage.

In addition, it is important to check the quality of the power switch and reset key and the correct connection between them and the motherboard, because the power switch and reset key in many inferior cases are often damaged after several times of use, resulting in a black screen display. If the power supply is damaged, replace it.

When the Industrial LCD display is powered up, there is a click sound, and the LCD’s power indicator lights up. When users move to the LCD screen, there is a hissing sound, and hairs on the back of their hands stand up.

If the Industrial LCD screen and speakers within the host let out a long and a short hum industrial LCD screen indicates display card and the connection between the mainboard has a problem, or display card and display this connection has a problem, can be the key to check whether the slot contacts good whether there is a foreign body inside the tank, the display card in a motherboard slot for testing, to determine whether there is something wrong with the slot.

Check to see if the chip on the display card can scorch, crack marks and whether the display card’s cooling fan is working, heat dissipation performance is good. Change a working graphics card to exclude whether the graphics card is damaged.

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Sometimes it turns out that on pressing the power button on your TV you"re not getting a picture and a sound. The first thing you are to determine whether it is a TV issue or a power issue. To check if power is supplied to the TV unplug the power cord from the back of the TV or the wall outlet. While it is unplugged, disconnect all external devices from the TV.

Hold pressed a power button on the TV for several seconds. Reconnect the power cord. Then, as you press the power button, look at the LED power indicator light. If it is not lighting up at all unplug the power cord from the TV and from the wall outlet and securely and tightly plug it back in.

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.

Highlight YES and press “ENTER”. The TV will turn off automatically after a few seconds. After the TV turns off, unplug the TV power cord and then plug it in again to complete the reset process.

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:

Use a different HDMI port for the device you are using. Unplug the HDMI from one input and plug it to a different input to test if a port is bad. Checking and reconnecting HDMI cable on the back of your TV along with switching the inputs to BLU-RAY and CABLE may lead to the expected positive result.

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.

Turn the device (Ex. Blu-Ray/CABLE BOX) you are using OFF and then back ON. The device you are using may have a temporary fault and needs to be reset.

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.

A monitor that keeps going black is an obvious sign that something’s wrong with your computer. The question is, is the problem trivial or serious? Often, the culprit is a loose or broken cable – an easy fix. Sometimes, however, you’re looking at a bad monitor or damage to the computer itself. You can diagnose many of these problems yourself with a little time and patience.

Check the power connection on the monitor itself. Most monitors have a little LED near the power button that lights up when the monitor is on, so check to make sure it"s getting power.

Despite their sophistication, computer components don"t last forever and are prone to unexpected failure. Your monitor may have suffered a short circuit, or simply died from an internal defect. The video card inside your computer tower heats up as it operates, which can cause damage if the temperature climbs too high.

Connect a different monitor to your computer to check for a picture; if you get one, it might mean your previous monitor has gone belly up. If the new monitor still shows nothing but inky blackness, your computer"s video card may have failed.

All the components inside your computer generate heat as they operate, which can cause the internal temperature to climb to component-damaging levels if the computer"s not properly ventilated. Small plastic fans are installed in all computers to help vent this heat before disaster strikes, but if they or the nearby case vents are caked with dust, lint and pet hair, that hot air inside your tower has nowhere to go. An overheating system typically displays warning signs such as frequent lock-ups, random shutdowns and loss of video. Keep your tower"s vents open and clear, and periodically clean out the inside to let the air flow freely and keep things cool.

Listen to your computer when your see a black screen picture. Is it dead silent or does it sound like it"s still working properly? If the entire computer stops functioning when your monitor does, you could be looking at a total system failure. This can occur due to bad components, viruses or conflicting software; the exact problem can take a bit of trial and error to narrow down.

Check the computer for symptoms of overheating: clogged/dusty vents, fan won"t turn. Use vacuum cleaner or spray can of "computer duster" to clean dirty areas.

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.

If repair costs are outside your budget or not worth it considering the age and condition of your TV, you may want to consider upgrading to a new smart TV. When you purchase a new TV from your local Rent-A-Center, you’ll enjoy free product service and repairs for the life of your agreement as part of our Worry-Free Guarantee.

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.

Rent-A-Center makes it easy to own a new TV, like an LG 65″ 4K UHD Smart TV. From OLED to QLED, we’ve got ultra high-definition TVs with picture quality so crisp, you’ll wonder why you didn’t upgrade sooner. Avoid the headache of your old TV, and shop your favorite TV brands online today. You can even get same-day delivery on qualifying purchases in select areas!

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• Perform highly diversified duties to install and maintain electrical apparatus on production machines and any other facility equipment (Screen Print, Punch Press, Steel Rule Die, Automated Machines, Turret, Laser Cutting Machines, etc.).

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.

Make sure the buttons on your device are not jammed. First, inspect the buttons to be sure they"re not caked with dirt, lotion, lint, or other debris. Then try freeing the buttons by pressing the button several times in quick successions. The button should free depress and release with each press.

Inspect and clean the charging port. Dust and debris could keep your phone from charging properly. Inspect and clean the charging port. If necessary you can gently blow into the charging port, or use a wooden toothpick to try to remove anything that"s stuck in the port. Once it"s clean, plug your phone in and let it charge for about 10 minutes. After it"s charged for a short while, try restarting the phone.

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.

Force restart the phone. Many critical system errors can be cleared up with a force restart. Depending on the model Android phone you have you may need to use some combination of buttons to force restart the phone, including:

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 possible, remove the battery, wait 30 seconds or more, and then reinstall the battery and start your phone. If cannot remove the battery from your phone, you"ll need to allow your phone to discharge completely. Then recharge it and try to restart the phone again.

Use caution when taking your phone apart to remove the battery. If you have a newer phone that"s hard to open with the appropriate tools, take the device to a professional who can help. Otherwise, you run the risk of doing further damage to your phone.

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.

Choosing Factory data reset will delete all the data, including pictures, music, etc., from your phone, so if possible, back up your Android phone so you can restore your data once the phone is working properly.

If you have a Samsung phone, use the Samsung Smart Switch to connect your phone to your computer, and then try to access it, reboot it, or back it up from there.

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.

When changing up which buttons you"re holding, you may have to try a few times to get the timing exactly right. It should be about 10 seconds before you switch to the new buttons (but keep the power button depressed all the time), but switching too soon or too late will cause the phone not to boot into Recovery Mode.

Clear the cache on your Android phone. This deletes temporary files and frees resources, which could resolve whatever issue is preventing the display from turning on.

Try a factory data reset. This will restore the phone to factory settings, which deletes all your data, so be sure you have a backup of anything you don"t want to lose before you start this process, if possible.

To restart your Android device, hold down the power button for several seconds and select Restart from the menu that appears. If that doesn’t work, do a hard restart by holding down both the power and volume up buttons for up to 20 seconds.

Android is known for its vast array of brands and models, spanning all budgets. Our favorites are the Samsung Galaxy Note20 Ultra and Google Pixel 4a 5G.

Overall, iPhones are of better quality than Android phones. A premium-priced Android phone is about as good as the iPhone, but cheaper Androids are prone to issues. Android phones surpass the iPhone in several categories, like battery life and voice assistant—it’s all about the features that are most important to you.

Ever had your TV showing nothing but a black screen even if the audio was working? Unfortunately, that’s a common issue with low/middle-end LCD/LED TVs these days… Even more frustrating, this issue often comes from a rather tiny and cheap component that can be easily replaced. Most common issues are:

One of my relatives had this exact symptom happening all of a sudden. This problem on low-end TVs often occurs within the first couple years. As the repair costs for that kind of TV is pretty low, considering repairing it yourself might be a good idea!

The first step into repair is to find the root cause of the issue. As backlight failure is a very common issue, this is the first thing to test. To do so, the easiest way is to power on your screen, put a flashlight very close to it and check if you can see the image through. The image would be very dark, like turning the brightness of the screen very very low.

That implies disassembling the TV to access the backlight which is between the LCD screen in the front and the boards in the rear. In my case, with a Samsung F5000, I had to process as follows:

First we have to remove the back housing to reveal the boards (from left to right: main board, T-CON, power supply) and disconnect the LCD panel from the T-CON board.

Note: Older TVs have neon tubes for backlight, which is thicker and less exposed to this kind of failure. LED backlight is the most common thing these days, but do not mistake an LED TV with an OLED TV. The first one is a classic LCD panel with a LED backlight, whereas the second is an OLED panel that doesn’t need any backlight as it is integrated in each pixels (making the spare parts much more expensive by the way).

As we can see, the backlight system is made of 5 LED strips. First thing to do is look for burnt LEDs. Most LED backlight systems have strips set in series, meaning that if one of the them fails, all the system goes dark…

Using a multimeter, we can confirm that the strips are indeed set in series, so now we have to test each strip individually. Professionals use LED testers such as this one (about 40$ on amazon) but as I didn’t had one at the time, I decided to make one, McGyver style!