repair lines on lcd screen manufacturer

Vertical lines appearing on LCD screen is very common. Whether the screen belongs to a laptop computer or desktop PC, mobile phone, or even a television, the fault is usually due to the ribbon cable and its connections.

A faulty ribbon cable can cause all sorts of havoc manifesting in bright vertical lines. Sometimes they can be coloured lines such as blue, green, grey, black, and red. The lines can appear thick or thin and on just one-half of the screen. Sometimes the fault will manifest as two vertical white lines. You can even get horizontal lines as well.

If you have lines appearing on the LCD screen, then the first simple thing to check is the seating of the ribbon cable that connects the display panel to the motherboard. Most of the time, the fault is with the poor connection made by the ribbon cable.

One of the most common problems with ribbon cables is oxidation of the contacts. It can happen either on the ribbon cable contacts or on the socket contacts. Manufacturers often use a mix of gold and copper for the electrical contacts, however, if they have not used enough gold, then oxidation occurs over time. This results in a working television or laptop screen suddenly exhibiting lines.

The solution is of course very simple, one needs to clean the contacts with a high quality electrical contact cleaner. It is best to clean the socket and the ribbon cable contacts, which will solve the fault.

One of the most common faults with laptops is that the ribbon cable connecting to the LCD panel cracks. It typically fails near the hinge area due to flexing in that region, and over time, some of the tracks on the plastic cable breaks. I have seen these types of faults on many laptops. It does not matter whether it is a Lenovo, IBM, Acer, Samsung, Toshiba, or even a MacBook Pro!

It is also possible to have a dislodged cable, which typically occurs on mishandled laptops. The plastic clip that holds the ribbon cable is very small and delicate and if the laptop receives an impact, the ribbon cable can dislodge.

This type of fault can also occur on LCD televisions; however, it tends to be on new units, where the box has received an impact during transit from the factory.

In this situation, the repair can be easy, as the cable will simply require reseating. However, there is still the labour time to consider as it can take the best part of the day to gain access to the ribbon cable.

If the laptop has a socket that provides a VGA output, then the first thing to do is to hook up another good monitor to it to see if the picture is good. If the picture on another monitor is good, then you can be sure that the video chipset and the motherboard electronics are operating properly, and it is a connection issue.

I used this same method of troubleshooting to repair an LCD television recently. Modern televisions have a video out socket, and if you feed the signal from that to another monitor, you can check for the quality of the video display. If the external monitor does not show lines, then you know for sure that it is a connection issue. Hence, this method of troubleshooting works for some of the modern televisions as well.

When half of the vertical interlace is missing showing a picture that is broken up vertically, the display appears with vertical lines. This is usually due to a cracked ribbon cable.

Generally, for laptops a replacement cable is always required due to it breaking near the hinge. I had this Dell laptop and replacing the LCD ribbon cable solved the problem. I managed to buy a replacement from Dell for a modest price £6.00. The laptop was just outside the warranty period; however, they still shipped out the cable free of charge. This is the reason why people buy Dell. In my experience Dell tend to stand by their customers and products, and their prices for replacement parts are realistic and down to earth.

Replacing a laptop ribbon cable is simple, and the top-half of the laptop, and keyboard needs removing to gain access to the socket on the motherboard side. As you can see, it flexes near the hinge area and breaks where the ribbon cable wraps around the hinge.

Laser machine, the purpose of repair is further hope to be able to correct the defective part, make originally filtered to throw away waste products, to patch the acceptable products. At the current acceptable product standards, the first is absolutely no color line defect; Second, at present many products have highlight the "no spot guarantees", therefore cannot have a pixel is always shine bright spot, but it can be a way to accept a few dark spots. So the object of laser repairing, mainly on color line defect and bright spot.

Welding: in a second metal overlapping across, use the appropriate energy and wavelength of laser, melt the metal parts and welding together, connecting the two electrode which was not connected (and to realize disconnection by cut off ) to realize repairing.

LCD screen laser repair machine (hereinafter referred to as laser machine), in the LCD screen maintenance industry is at high-end technology of repairing, is the most high-end technology. In the LCD screen repair area except COF losing welding, TAB burnt (the fault with can be repaired by bonding machine) other such as bright line, half line, point, line, coarse, multi-line can use laser machine to repair. Laser machine in the LCD screen repair process has high efficiency, high repair rate, low cost (the same fault in the laser machine does not need to replace parts, not only save cost but also improve repair rate not influenced by lack accessories) etc, and widely used by large production factory, brand after-sales and maintenance of the company as a main screen equipment.

Shenzhen Wanbo Hi-tech Co Ltd is specializing in manufacturing TAB COF bonding machine, ACF bonding machine, LCD screen laser repair machine, LCD tv repair machine, lcd display lines laser repair machine etc. We have R&D team based in Shenzhen. Our goal is to build perfect world.

Immediately upon initial installation, it had thin colored vertical lines, about 20-30 lines, in a vertical band about ten inches wide, right in the middle of the screen.

However, the solid black background remained and grew a little wider. The solid black background spans the width of the screen from top to bottom. It is about twenty-two inches wide.

It has a very interesting set of white nearly-horizontal lines which appear at its bottom-most part/border. These lines swirl into a vertex at the right one third of the bottom of the black area. These lines are thin and grayish-white.

Vin: PWB input voltage (12V)VDD: ASIC, source IC, gate IC driving power (3.3v)VGH: TFT component switching voltage (~30V)VGL: TFT component turn-off voltage (~ -6v)VAA: step control voltage (~17V)VCOM: liquid crystal reversal reference voltage (~7V)

3. #If all the above is OK, measure the LVDS voltage value. Under normal conditions, the LVDS signal’s RX+/ RX-voltage value is about 1.2v, and RX+/ RX-difference value is about 200mV. At the same time, the resistance of the LVDS signal to ground and the resistance between the LVDS signal pairs can be measured (100 ohms). If there is an exception to these values, try replacing the ASIC.

1. #Confirm whether the COF on side X is hot compared with the normal temperature, whether there is fracture or wear crack, and whether the COF is burnt.

2. #Confirm whether the VAA is normal (normally about 17V). If abnormal, disconnect the RP32 to confirm whether it is caused by DC/DC loop or X-side COF: disconnect RP32, if the VAA is normal, the COF is bad, CO must be changed; COF can be Disconnect one by one to determine which NG disconnects RP32, VAA NG, try to change UP1; at the same time, confirm whether the continuity of the surrounding triode is OK.

4. #Determine whether the gate IC is OK. There is a signal test point on the back of COG-IC, and the green paint can be scraped for measurement confirmation; If there is a gate IC problem, which IC fault can be confirmed. The confirmation of gate IC fault is only for analysis when you are interested, and this method is not recommended.

3. #Confirm whether the RSDS value is correct, normal RSDS is about 1.2v, and the signal difference is about 200mV; At the same time, we can confirm the resistance between RSDS signal (normal 100 or 50 ohms) and RSDS resistance to ground. If the voltage is NG, check if the ASIC and X-COF are hot.

1. #Adjust the VR knob to see whether it can be adjusted and whether the screen performance changes. At the same time, confirm the VCOM value (about 7v), if NG, replace the VR knob.

2. #Confirm VGH/VGL voltage (about 30V VGH and -6v VGL), and confirm whether it is DC/DC loop NG or COF IC NG; The corresponding resistance of disconnected VGH and VGL can determine whether it is a DC/DC problem or a COF-IC problem. If it is DC/DC NG, try to replace UP1 or confirm whether the corresponding transistor is OK.

3. #Confirm whether the gate IC is OK. There is a signal test point on the back of COG IC, which can scrape the green paint for measurement confirmation; Or cut COF halfway from G3. If there is a gate-ic problem, which IC fault can be confirmed.

2. #Confirm whether there is 12V input, if not, confirm whether the connector is OK, and confirm the resistance value of 12V voltage to earth; If conn. NG, change conn.; If 12V is short-circuited to the ground, disconnect FP1 to determine the short-circuiting circuit.

3. #Confirm whether FP1 is open; if open, replaces fuse. If the 12V accessory of this model has a reverse diode, confirm the continuity of the diode and check whether it is burnt.

B. Confirm VAA resistance to ground at VAA test point of R plate (A short circuit usually occurs), disconnect the corresponding capacitance of the following 3 COF, and confirm VAA resistance to the ground again. If OK, replace the capacitor, if NG, replace COF. If VAA is still NG, confirm DC/DC loop as all models.

6. #Disconnect RP32 to confirm VAA, if NG, try to change the PWM IC (in general, it will be good), if still NG, try to change the gamma-ic or corresponding to the VAA several large capacitances (in general, it is rare, this situation is generally accompanied by VAA to the ground short circuit).

3. #Shaking module, if vertical lines disappear or reappear, then it can be judged that the possible cause is COF pin broken, and the crease should be found under the OM microscope.

4. #Press the LCD glass side of the panel, if the vertical lines disappear or reappear, it can be judged that the cause of poor contact, OM checking should be able to find the poor contact.

5. #If there is no display change in pressing, confirm whether ITO is damaged under the OM microscope, or pin signal waveform corresponding to needle COF.

Depending on the backlight structure, there will be different results. The failure of the performance may be a point-off, or it may be a backlight with a dark band.

3. #Disassemble the backlight, confirm whether there is a short circuit with broken skin on the lamp strip, whether the plug of the lamp strip is fully integrated with the socket, whether the pin is aslant/off, whether the connector is off, and whether the LED bead is black and injured.

4. #The fault of the product is basically caused by the above reasons. If the appearance is fault-free, the lamp bar can be crossed to confirm whether the phenomenon follows the lamp bar, or the voltage of the lamp bar and the conduction condition between the lamp beads can be measured.

The above is the full text of LCD screen failure repair guide, we hope it is helpful to you. If you need to buy LCD and find a reliable LCD supplier, we suggest you to read our other great blog – How to find a reliable LCD supplier.

Founded in 2014, VISLCD is a professional LCD supplier. We provide LCD modules, touch LCD and customized LCD in various sizes with stable quality and competitive price. Welcome to contact us for any LCD demand, thank you.

The appearance of static or flickering horizontal lines on a computer screen can be frustrating and inconvenient, but there are many steps you can take to try to fix your problem. This guide will walk you through various checks and fixes you can perform on your computer and its monitor to find out why the lines are appearing and what to do to make them disappear.

Horizontal lines on a computer monitor can be caused by overheating or physical damage to the monitor and connecting cables. Conflicts between the screen and selected screen resolution and refresh rate settings can also cause line problems, as can out-of-date device drivers and operating systems.

Try a different monitor. If possible, try connecting to a different monitor or screen. It can help you determine if the lines are caused by your computer’s screen or the computer itself.

Check your monitor while it’s disconnected. Keep your monitor powered on, unplug it from your computer, and look for any flickering or lines on its screen while it’s disconnected. If you see any kind of distortion, this means that your monitor is damaged.

Close and reopen your laptop. Close your laptop’s screen, wait a few seconds, and reopen it again slowly. Look to see when the lines begin to appear on the screen as you open the laptop. If the lines only occur at a certain angle, the cause is likely damaged wiring.

Check the monitor connection. Ensure all of the cables are securely connected, and watch for any improvements in screen image quality while you’re inspecting the cables. If you notice the image improves or worsens while touching the connecting cable, it may need replacement.

Remove magnets and electronics. If you have other electronics or magnetic devices near your computer, screen, or the connecting cables, move them somewhere else as they may interfere with the connection and cause the lines.

Calibrate your monitor. This process should only take a few minutes and can help optimize your monitor for use with your computer and its environment.

Run a troubleshooter. Open Settings and select System > Troubleshoot > Other trouble-shooters and run the Video Playback and Program Compatibility trouble-shooters. If you get presented with any recommendations for other trouble-shooters, run those too.

Reset your monitor to its factory settings. If you’re using an external monitor or screen, use its built-in settings, not your computer’s settings, to reset it to its factory settings. You can usually access these settings via a physical Settings or Menu button on the computer monitor itself.

If your monitor is displaying a message that reads "no input signal," you may have a defective cable or component. To troubleshoot the issue, turn your computer off and on again. Also, unplug the monitor-to-PC cable and plug it back in, making sure the connection is secure. Try another monitor to see if the problem is with your PC. Also, try resetting your video card; if nothing else works, replace your video card.

To fix coloration and distortion on a computer screen, power the monitor on and off, restart the computer, and make sure the cable between the monitor and computer is connected securely. If you"re using a CRT screen, try degaussing the monitor. You can also try adjusting your video card"s quality settings and experimenting with your monitor"s adjustment buttons.

To fix screen burn on a monitor, also called "ghosting," try turning off your display, ideally for at least 48 hours. Also, try setting your screensaver to an all-white image and letting it run for a few hours. You can also try using the JScreenFix tool, which fixes stuck pixels.

Watching your mobile screen with those white or black vertical/horizontal lines is annoying. In short, it’s tough to use a phone with these lines appearing on the screen. Typically, this issue is associated with the LCD, caused by a faulty hardware component in your device due to some accidental fall or water damage. Phones with such damages can only be fixed at a phone repair center.

If you are itel, TECNO or Infinix phone user and is troubled with vertical and horizontal line issues, make a reservation now without waiting time at the service shop. Carlcare Service will fix your phones easily. If your phone is under warranty, Carlcare can also save you repair costs. Check warranty now>>

However, sometimes the culprit could be an app or software glitch, hindering the functionality of key components like display assembly or motherboard. In that case, you can tackle the situation at home.

Before you head on to the fixes, let’s make your phone data safe. Sometimes, these lines are irreversible, and even the solutions you’re up to try may be followed by some sort of data loss. Therefore, the first thing you should do is make a backup of important files and apps on your device. Some popular ways for data back in Android devices are via:

In case you’re not sure about the process, it’s better to take help from a professional repair center. For Infinix, Itel, and TECNO users, Carlcare Service - being their official service center for these brands- is a recommended place to go.

If there’re white lines on the screen, this solution may prove effective. A battery cycle is when you charge a mobile to 100% and let it drain to 0% again. Usually, the lines will disappear soon as you charge the battery fully.

If the above methods don’t work, it’s time to try this masterstroke. Using your phone in a safe mode will confirm if the lines are because of some faulty app or software.

Check if the lines are gone! If yes (hopefully), then a third-party app is the culprit. Now uninstall the latest downloaded applications until the issue is gone. OR you should try the Solution:4

Suppose the lines are still visible. Then the issue is most likely due to some hardware failure- and the best option for you is to take your device to a reliable repair center.

It won’t be aggregation if you call “Factory Reset” the mother of all solutions. It fixes most of the issues caused by an app or software glitch. The process actually brings your phone back to the factory setting by erasing all the apps and files you’ve downloaded post your phone purchase.

If the horizontal or vertical lines still appear on your phone screen after trying all the above methods, you better take your device to a reliable mobile repair store near you. Most likely, it’s a faulty hardware component that needs to be repaired or replaced. Here, we would suggest you opt for only an authorized service center, as this will ensure flawless repair at a reasonable cost. Besides, if any of the components have to be replaced, they will be genuine and as per your specific requirements.

If this issue arises in your Infinix, Itel, or TECNO phone, Carlcare Service is here to help you! Pay a visit to your nearby Carlcare center. Our highly skilled technicians will fix the issues and saves you much trouble.

As the official service center part, we provide 100% original spare parts and various value-added services for Infinix, Itel, and TECNO users. Now with the online reservation service through Carlcare App, you don’t need to wait while your phone is repaired at our service centers.

Power down the computer and unplug all peripherals. If you are using a laptop, take its battery out by flipping it upside down and sliding the battery release latch. Press and hold the power button for 15 or 20 seconds to clear all residual power from the system. Some of the computer’s power might have been transmitting to the monitor, causing it to short out. Reconnect everything and turn the system back on to see if the lines are gone.

Unplug the monitor from the back of the computer and wait a few seconds until it displays a message “No signal.” If the no signal message also has vertical lines, you know the problem is in the monitor and not in your computer. Press the “Menu” button on the screen and then use the other buttons to browse for a “Factory Settings” mode. Select this mode to reset the monitor to its original settings. If the lines persist, the monitor may have been dropped or exposed to a magnet -- which can’t be fixed.

Reconnect and turn the computer back on. Look for the lines at boot up: if you see lines before Windows loads, the problem is either with the video card, the video connection cable -- whether HDMI or VGA -- or the monitor itself. If the lines only appear in Windows, the problem is a Windows setting -- most likely the refresh rate. Right-click on the Desktop once Windows loads and choose “Screen Resolution.” Click “Advanced Settings,” “Monitor,” and then lower the refresh rate to see if the lines disappear.

This website is using a security service to protect itself from online attacks. The action you just performed triggered the security solution. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data.

This website is using a security service to protect itself from online attacks. The action you just performed triggered the security solution. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data.

Q:"Vertical lines on iPhone 11 screen!! This is what happen to my phone after I bought it 3 days. Several lines appeared on the screen suddenly. Any idea why it happens? Any other user facing the same problem with me?" – From an iPhone 11 user

There are always a large number of reports from users stating that they find vertical lines on iPhone screen. This is an old problem, starting with the iPhone 4 and continuing through the iPhone X, 11 and 13. the color of the lines may vary from black, red, blue, green, pink, grey or purple. It could result from physical damage and software problems. Anyway, to solve this problem, you should follow the 10 solutions below, so that you can get rid of the lines while reducing the cost of the repair to the minimum.

The colored lines on the iPhone screen in vertical direction could be caused by a few things. No matter which specific situation you"re encountering, the following content will give you some idea of why.

The vertical line problem often occurs with Apple users and you might not know what to do when it appears on your screen. Here a video tutorial will lead you to the right place and guide you to fix this issue clearly.

A force restart is similar to taking out the battery and putting it back on. It is going to completely shut down all the apps and programs running on your iPhone. Whenever you see there are lines across the screen, you can fix it easily by hard rebooting your iPhone. After the hard reboot, the lines on the screen may disappear. To hard restart your iPhone, follow the tutorial enclosed below.

iPhone 6 or former iPhones: Press the "Power" and "Home" button on your iPhone simultaneously for around 13 seconds. You will feel the vibration of the phone, then it will turn on.

iPhone 8 and later iPhones: Press the "Volume Up" button and release it quickly, then press the "Volume Down" button and release it quickly; then hold the "Power" button until you see the Apple logo on the screen.

It might seem ridiculous, but in some cases, iPhone screen lines vertical problem are caused by things as little as water drops or dust. These things can be difficult to notice when you have a screen protector on the screen. If the water drops or dust get stuck between the screen and the screen protector, it is natural that there will be vertical lines across the screen. Therefore, you might as well remove the screen protector, clean the screen with a cloth and see if the lines have gone.

Essentially, cycle charging means charging the battery to 100%, then using it until it drains to 0%. When the phone is charged to capacity again, the vertical lines might disappear.

It is also possible for vertical lines to appear when LCD cables become disconnected from the logic board during sudden jolts or a fall. A slightly shifted iPhone screen does not necessarily mean that it is damaged; it is just a slight shift.

It might be workable to remove the vertical lines by gently pushing the iPhone"s screen back into place to reconnect the cables with the logic board. Make sure that you do not apply too much pressure to the screen in order to prevent the screen from breaking further. The steps are as follows:

This issue may result from the bugs of some outdated iOS versions. A user complains to us that vertical lines on iPhone 5s screen, and simply updating the system works. We understand that some users may think that iOS updates are useless in general, but that is not true. Except for the updates of new features, iOS update often contains bug fixes, which is very important to the normal function of the iPhone.

Step 2. If there is an available update, press the "Download and Install" button to confirm your update. The updating process will begin, what you need to do is just make sure the Wi-Fi connection is good and wait for the update to finish.

Firstly, install and launch Joyoshare UltFix on the computer. Next, plug your iPhone into the computer, and click on iOS System Repair section. After that, hit the "Start" button to proceed.

You are now in the mode selection window. To avoid losing data, choose the "Standard Repair" and click on right-arrow button. If your device failed to be detected, refer to the on-screen operations to enter DFU/recoevry mode.

Some of the info about your iPhone will be displayed on the screen. Make sure all the info is correct and change the wrong points. Then click the "Download" button to download the matching firmware package.

Lastly, click the "Repair" button. The downloaded firmware package will be unzipped, and the program will start to fix the vertical lines on your iPhone screen. A few minutes later, the repairing process will finish, and the lines on the screen will disappear.

No matter is purple vertical lines on iPhone screen, or other colors, these ways may help you. A factory reset will be needed in the way. In this process, your device is wiped and returned to its original factory settings. All your data will be lost. Before restoring your data, ensure that it has been backed up. To revert to factory settings:

Step 6. Ensure that the factory reset is completed by giving the device some time to do so. You should check whether the vertical lines have disappeared after restarting your device.

Another alternative to restore your iPhone with vertical lines to default settings is to using iTunes. As we all know, iTunes always be regarded as an official Apple solution to help troubleshoot some software issues. You can make it by directly connecting iPhone to the latest version of iTunes, click iPhone device sign, then go to Summary → Restore iPhone → Restore.

The DFU mode, Device Firmware Update, can be tested to restore your iPhone. This way clears data on your iPhone and reloads settings by default. You can first enter DFU mode and then do operations below:

As we mentioned in the beginning, the vertical lines on your iPhone screen are usually a sign of physical damage to your hardware. If you see the lines after dropping your phone, it is very likely the screen or the motherboard is damaged. In this case, letting the Apple technicians fix the hardware damages will be much safer than repairing it on your own.

It is common for smartphone devices to have vertical lines. A variety of gadgets are affected, not just iOS devices. Luckily, vertical lines on iPhone screen can be dealt with by most of the solutions listed here. Note that some of the methods mentioned above may lead to data loss, so we strongly recommend you to back up data in advance or use Joyoshare iOS System Recovery directly, which will not cause data loss and has a very high success rate. We hope that one of the methods in this article can help you.

ELSIN provides warranty and post-warranty repairs of LCD screens for service organizations, LCD panel makers, manufacturers and distributors of monitors, laptops, TVs and individual customers.

The advantageous location of ELSIN in the center of Europe in Pilsen city in Czech Republic enables fast service to customers across Europe and especially in the regions of the Czech Republic and Slovakia.

As the only company in the Czech Republic we carry out repairs of LCD panels including replacement of polarization film and repair of defective lines / blocks for sizes of 10 ” – 65 ” with a capacity of over 2000 pieces per month.

Vertical and horizontal lines on the best desktop monitors can ruin the immersive effect from your display, which is especially frustrating if you’ve invested in your monitor, like one of the best curved gaming monitors. To find out how to fix annoying vertical lines or horizontal lines on an external monitor, you’ll first want to test the picture to find out what causes these lines on the computer monitor, whether the problem is from the PC, cable box, or another input source, or if the fault is with the monitor, its LCD panel or internal hardware itself. And while on the topic of “vertical” lines, there are vertical monitors that exist to help make certain professions or hobbies more efficient, like coding and streaming.

Before attempting any other troubleshooting, such as fixing black bars on the side of your monitor, the first step toward finding solutions for this desktop monitor problem is to isolate the source of the issue.

The first option is to test out the image on your favorite computer screen without any peripherals connected. To do this, disconnect all cable connections and use the remote control or the control panel to disconnect Bluetooth and WiFi, if your external monitor is so equipped. If there are no vertical or horizontal lines on the default picture or menu screen, then the problem is likely due to your PC or input device, or to your cable connections. If the lines still appear, then the issue is likely to be with the external monitor itself.

If the monitor shows lines when not connected to any cables or input method, the problem is likely with the monitor itself. Image issues such as lines can be caused by damaged internal ribbon cables or the LCD panel itself. If this is the case, the repair process will depend on what the hardware problem is, whether you have a flat or curved computer monitor. If you see light leaking on the edges of your monitor screen, you may have blacklight bleed, which you can learn about in our resource content on what is blacklight bleed.

If the lines go away when your external monitor has no input, then you’ll want to look for a connection issue or an issue with your PC or laptop’s graphics drivers, driver settings, or picture settings. Additionally, you may want to check for any input lag issues with your monitor at this time.

Make sure all cables are connected securely. A loose connector can cause various picture issues including gray lines, pink lines or green lines.You may want to unplug your monitor from the input device and check the condition of the ports.

You may be able to see if there are any bent or broken pins in the connectors of these input terminals. Double-check the cables if you have two monitors.

If you need more organization in your space, consider the best dual monitor mount. Don’t use a paperclip or other metal object to try and clear out a VGA terminal.

If the device picture settings are not compatible with the monitor’s native resolution, you may see errors, such as lines on the screen. On a Windows PC, setting a display resolution or refresh rate that is not supported can damage a monitor.

If you find a damaged part, you can either consult a repair service or professional repair technician, or you might want to fix it yourself using an electronics repair kit. Use caution when removing ports, and always unplug a monitor before working on a repair.You may need to consult the owners manuals to see what types of repair tools will be needed.If the cable is faulty, the solution may be just to buy a replacement cable.

That may be the best path if you need to immediately fix your monitor and can’t spend time researching and repairing the damaged part on your own, like if you use your monitor for work like a monitor for video editing.

Look for any video or graphics card driver with a yellow exclamation mark or question mark. These common error notifications may mean your laptop or PC graphics drivers are out of date.

Alternatively, you can run a system scan to discover errors and graphics driver software issues. If there is a problem with your graphics card driver, it may show up on a system scan. Try booting up in safe mode or BIOS, if available; this will often show whether the display issue is a software problem or a hardware problem.

A screen resolution adjustment may also help. If the device picture settings are not compatible with the monitor’s native resolution, you may see errors such as lines on the screen. On a Windows PC, setting a display resolution or refresh rate that is not supported can damage a monitor.This is more often a risk with older CRT monitors.

Explanation of why pulse width modulated backlighting is used, and its side-effects, “Pulse Width Modulation on LCD monitors”, TFT Central. Retrieved June 2012.https://www.unm.edu/~tbeach/terms/inputoutput.html

Once you have found the correct part number, see HP Consumer Notebook PCs - Ordering HP certified replacement parts. Use the instructions in this document to order a replacement part.

HP recommends that you only order parts from an authorized HP repair parts dealer. Parts ordered from third-party companies might not perform as expected and might cause additional