can you repair an lcd screen manufacturer

If the picture responds to input but displays a messy image, such as jumbled multicolored squares, the AV (audio visual) board may be damaged. This is usually a rectangular circuit board located near the audio and visual cables. Replace obviously damaged parts using a soldering iron, or order a replacement board and carefully install it to the same screws and ribbon cables.

The main control buttons may be faulty. Clean them with a metal cleaner, or jostle to attach a loose connection. If necessary, locate the circuit board they are attached to and re-solder any broken connections.

Check input cables for damage, or try other cables of the same type. If necessary, inspect the circuit board they are attached to and re-solder damaged connections.

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Liquid crystal displays (LCDs) are the most widely used display technology. Their applications cover TV, mobile phone, appliances, automotive, smart home, industrial meters, consumer electronics, POS, marine, aerospace, military etc. LCD screen display problem can occur for several reasons.

Effect of environmental conditions on the LCD assembly. Environmental conditions include both the effects of temperature and humidity, and cyclic loading.

Effect of manufacturing process. With the development of LCD for more than 40 years and the modern manufacturing equipment, this kind if defects are getting rear.

Common failures seen in LCDs are a decrease in screen contrast, non-functioning pixels or the whole display, and broken glass. Different kinds of LCD display problem need to have different kinds of fix methods or make the decision not worthwhile to repair.

Broken glassIf you accidently drop the LCD and you find it broken on the surface but the display still works. You might just break the touch panel; you can find a repair house or find a youtube video to replace the touch panel. If you find the display not showing, especially you find the fluid leaking out. You need to reply the whole display modules.

Dim LCD displayLCD can’t emit light itself. It uses backlight. Normally, the backlight is not fully driven, you can increase the LED backlight to make a dim LCD display brighter. But if you LCD display has been used for a long time, it is possible that the LED backlight has to be the end of life (not brightness enough) if you turn on 100% backlight brightness. In that case to fix LCD screen, you have to find a way to change the backlight. For some display, it is an easy job but it can be difficult for other displays depending on the manufacturing process.

Image sticking (Ghosting)Sometimes, you will find the previous image still appearing at the background even if you change to another image. It is also called burn in. This kind of failure doesn’t need to repair by professionals. You can simply shut off the display overnight, this kind of problem will go away. Please do remember that displaying a static image for a long time should be avoided.

With the modern manufacturing process and design, this kind of failure rarely happens. Normally, it is caused by no power. Please check if the battery dead or adapter (power supply) failure or even check if you have plug in firmly or with the wrong power supply. 99% the display will be back on.

LCD has white screen – If a LCD has a white screen which means the backlight is good. Simply check your signal input sources which are the most causes. It can also be caused by the display totally damaged by ESD or excess heat, shock which make the LCD controller broken or the connection failure which has to be repaired by professionals.

Blur ImagesAs the LCD images are made of RGB pixels, the screen shouldn’t be blur like old CRT displays. If you do see blur images, they might be caused by two reasons. 1) LCD has certain response time, if you are playing games or watch fast action movies, some old LCD displays can have image delays. 2) The surface of the LCD is made of a layer of plastic film with maximum hardness of 3H. If you clean the surface often or use the wrong detergent or solvent which cause the surface damage. To fix damage on LED screen it’s need to be changed with professionals.

If you have any questions about Orient Display displays and touch panels. Please feel free to contact: Sales Inquiries, Customer Service or Technical Support.

However, if the digitizer or LCD is also damaged during a fall, that screen no longer carries value because it cannot be refurbished. Repair shops cannot sell broken LCDs to refurbishing companies; therefore, they cannot offset the cost of an LCD repair. That is why repair stores often charge a little extra if there is damage to the LCD or digitizer, to make up for that loss. Repair stores that don’t have an additional charge for an LCD repair typically inflate their glass repair price to make up for the loss from damaged LCDs. If they have one price, that means everyone is paying more to cover the cost of customers who have damaged LCDs and customers who only have cracked glass. This is why TCR separates the price of glass and LCD repairs for you! If you only have cracked glass, you only have to worry about paying to replace the cracked glass.

If your phone or tablet’s glass is shattered there will be cracks or chips on the screen itself. If it is just the glass that is damaged, the device may still function and you may be able to use it normally. If this is the case, it is likely that only the glass needs to be replaced. To prevent further damage to your device it is best to get it repaired quickly. For example, if liquids seep through the cracks it could cause permanent damage to the LCD.

Many people may continue to use their touchscreen with shattered glass and delay fixing the glass on their devices; however, if the touchscreen isn’t responsive, it could be a sign of more significant damage to the device’s digitizer which is integrated with the LCD screen.

A pixelated screen can indicate LCD damage. This would look like a patch of multicolored dots, a line or lines of discoloration, or a screen with rainbow colors. For many people, these colors are an easy way to know that their LCD is broken and that they should get it repaired.

Dropping your phone isn’t the only reason you’ll end up with a pixelated screen. Over time, your screen’s LCD may break down through regular use. This happens to other devices aside from your smartphone or tablet. Pixelation can happen to TVs and computers, too. People typically decide to buy a new device when this happens. Fortunately, with an LCD repair, you can fix the device without needing to replace it.

A black screen or black spots on your smartphone or tablet is an indication of a damaged LCD. Often with a bad LCD, a phone may still turn on and make noises, but there is no clear picture. This does not necessarily mean any other part of the phone is damaged and a simple screen replacement will get it functioning again. Sometimes it can mean a battery or other internal component is damaged. It is best to have a highly qualified phone repair technician diagnose what is wrong so the appropriate repair can be made.

Fortunately, your mobile device is fixable whether you cracked the glass or damaged the LCD. Stop by or call TCR: Triangle Cellular Repair at (919) 263-2699 for a free diagnostic and quick, affordable cell phone repair in Chapel Hill and surrounding areas. We’re always happy to help!

The first thing you need to do when your LCD screen gets broken is to check your phone insurance. You’ll need to know whether it covers your cracked screens and the specific conditions that surround them. Doing this helps you make the most out of the money you paid for your phone insurance.

If the insurance covers the LCD screen, arranging for a repair will be straightforward. In a lot of situations, your main issue will involve going about your day without a phone. You can expect it to return within a few days.

Take note, you might still need to pay for the excess charges. The only time problems start is when you can’t get any replacement when your screen breaks. In that case, you’ll need to do the repairs on your own.

A good option while putting your cracked phone to the repair shop is to use an old phone. If you still have your old phone stashed away somewhere, it might be your best bet for now. Look at your drawers and check whether your old phones are still functional.

If your old phones aren’t there anymore, you still have friends and relatives. Ask them if they have gadgets they’re willing to lend. That way, you’ll have something to use while you decide what method to use to repair your cracked LCD screen.

In 2017 alone, around 5 million smartphone owners in the United States broke their phone screens. That shows how likely it is for you to break yours too. Accidents can happen even when people are careful.

It can get difficult, especially when the screen itself cracks instead of the glass cover. Repairing your screen will need you to take it apart using these steps:

Remove your battery cover as well as the battery and all the cards from the device. Once done, you can now unscrew the back of the device as well as remove the screws around the LCD. The screw types will depend on your phone brand and model, but the most common ones include T4, T6, or #00 Phillips screws.

Using a pry stick, take the housing off your device. Insert the stick between the two pieces of housing. Move it around the housing perimeter so the two pieces get disconnected.

Most devices have a cable that runs from the LCD to the control board. Disconnect the cable by lifting up on the connector. You also need to do the same on the cable that runs from the glass to the control board.

Try using a pry stick to remove the LCD from its own housing. Some devices might require you to remove the glass off first. If so, you need to use a heat gun on the glass for about half a minute to make the adhesive loose enough.

It’s important to remember that some devices like the iPhone combine the glass and the LCD together. That’s why it’s important to look at your replacement LCD and see if it also has the glass with it. If they’re connected, there’s no more need to pry them apart.

Put the replacement LCD in the housing of the cracked one. Once you’re finished, you can now reassemble the device. It’s easy as long as you reverse the steps you took when taking it apart.

There is always the option to send your phone to its manufacturer for the repair. But if you don’t want to pay a lot, you should try a local repair shop. The great thing is that it only takes a short Google search to find the ones near your area.

It’s always important to check the customer reviews before you commit your phone to an expert. Not all repair shops are the same. But if you find a skilled technician, you can rest easy since they can repair your screen fast.

In some scenarios, your phone will sustain irreparable damage alongside its LCD screens. You might think that it’s already worthless and hopeless. But the truth is that there are some websites out there that will pay for your broken device.

A good example is the shopping platform eBay. Some people buy broken phones since they want to salvage other parts to repair their own phone. It won’t net you a lot of money, but you can at least save some money when you need to buy new phones.

Some will also give you credit if you’re buying a used phone. Keep in mind that you might get a better deal if you take that instead of getting cash. But it’s only good if you’re buying a used device.

You have a lot of options if your phone’s LCD screen gets broken. No matter what you choose for your LCD phone screen repair, keep in mind that these options are always available for you. Look for the best option and commit to it as soon as you can.

In my case the ribbon was half detached. I took the pen solder bold and set it to 180 °C and slowly moved several times with medium pressure along the ribbon and pressed it onto the plate. I had to repeat this procedure 3-4 times until all pixels were working again.1

I investigated my landline phone to repare its LCD according to this good tutorial, unfortunatly I found the cutted connection is not on the main PCB board but on the flat connector itself... and any heat applied (soldering tentative...) to the flat is going do destroid it completly ((

Instead of hot-air gun use hot melt adhesive (https://en.wikipedia.org/wiki/Hot-melt_adhesive) gun. Just use its hot spike, and you will be able to point precisely to the place you need a heat.0

I had a Natwest Card reader, where the screen was illegible and using this tip with my wife"s hairdryer I got the card reader operational, many thanks !!!0

Unfortunately, after two days the display started to lose some segments. What would other people recommend? Is this expected and should I have done something else other than heating and rubbing with an eraser?

Many thanks for sharing the information on how to fix these displays! Worked out perfectly on a asus lcd poster from ages back which gave no screen at all and are not sold anymore to replace.ReplyUpvote

Very good interesting piece. I am no way shape or form of an electronics junkie , but i am more like a jack of all trades and a master of none type. I have a dual power TS-100 hand held calculator where the second digit was pixelated I would say. I googled how to repair it and seen your story. I took my calculator apart and the back side is where that glue strip is at. I could not find my heat gun, thanks to having to move it for the Christmas tree setup. I used my Kitchen Propane stove front burner and waived it over it a few times. It took a few tries but I finally was able to get the dead pixel back. One good thing is the calculator was on so in between heat ups and eraser rubbings I could see my progress and man your fix really worked. Thanks fro the story. My favorite pocket calculator is fixed once again. I wish I would have taken before and after photos, but was too giddy to try your repair idea.0

Google offers no link as to how to open an AEG Voxtel D235 handset. After opening the battery compartment and removing batteries and the two Philips screws at the bottom, the upper half refuses to budge. Is there a method for opening the upper part, to access the LCD screen connector for repair? Any suggestions appreciated.0

This made me squeal when it worked! I fixed an old treadmill computer from a machine I bought second-hand. There was a broken connection on the breadboard so I dunno if that work but we"ll see! I didn"t have a heat gun, blow dryer or clothes iron to use, but I made it work with the end of my hot glue gun. Thanks, God bless!

I just got my CM921 to work - so, carefully unplug or remove the lcd unit from the circuit board (8 pins i think) then separate the white board (same size as the lcd) from the back of the lcd display (it was glued on one side and i used a scalpel) the lcd will then flip over and you can see the ribbon, then follow the instructions above, return the lcd back down on top of the little white board as before and plug it back in...0

There may be a thin conductive rubber strip between the glass of the display & the board it is attached to. Over time this rubber can leak an insulating compound onto the interface connection that can, at times, be removed by removing the strip and gently rubbing it with a clean soft eraser. Be gentle as it can be fragile & easily damaged. This was an effective repair in the early days of these displays.0

We are also a family owned and operated business out of Boca Raton, FL, and our business is refurbishing large volumes of salvageable combos (Cracked Glass Good LCD) such as the ones that you buy. We can give you a credit for each combo that we refurbish based on the units that you provide for us to work on. We have a very transparent process and would like the opportunity to serve you. We have the capacity to handle large volumes and would very much like to get in touch with you to discuss our capabilities and show you how we could improve the margins in your buyback business and possibly reduce your need for working capital. Please reply if interested so that we can set up a time to talk. I assure you that it will be a good use of your time.

Encoder, LCD, rotating equipment and vacuum pump repair services. Capabilities include rebuilding, testing, asset and inventory management, barcoding, troubleshooting, predictive and preventative maintenance, database management, engineering and reverse engineering. Entertainment, food and beverages, government, military, OEM, pharmaceuticals, steel, aerospace, agriculture, alternative energy, automotive, chemical, power generation, electronics and other industries served.

If you are reading this, you may have accidentally or intentionally damaged the screen of your TV (LCD, LED, Plasma). Now if you are looking for a solution to fix this problem, check out our recommendations:

First: If your TV does not have a cracked screen and the problem has just appeared on its own, you may be able to fall back on the TV manufacturer’s warranty.If your TV screen has developedblackspots,vertical lines,small dots, unusuallybright pixels,fading, distortedshading, orcolor issues, you may be able to use the warranty. Be sure to have your purchase receipt, and take note of the model number and serial number on the back of your TV. In case that your warranty has expired, you might contact us with any questions related to your TV repairs.

Second: If your flat-screen; TV has the dreaded vertical lines, half of the screen has turned darker, the screen is cracked, or the screen is broken, this can be repairedbut may cost more than you paid for the complete TV. If your screen is cracked or broken, you can try replacing the screen, LCD, Plasma, or LED part.

Conclusion: If your TV screen is cracked and damaged, it is mean that you have damaged the LCD, LED or Plasma display. If this is your case, we, at the Nerd Repair Center do not recommend fixing the broken/cracked screen because it will cost you more to repair your TV than to replace it with a new one.  I know this is no the answer you were looking to hear, unfortunately, this way we will save you a lot of time and money in the process. please note that this is the nerd repair center professional recommendation based on years of tv repair service experience.

Unfortunately, one of the most expensive parts of a laptop computer is its display. If it breaks, there is not much an end-user can do to fix it. If your laptop display is cracked, broken, or otherwise physically damaged, we suggest you contact the laptop manufacturer so it can be sent in for repair. Another solution would be to take it to a local repair shop, but they not be as experienced with your particular model.

If you prefer to try and fix the broken LCD yourself, you would need to get a replacement LCD screen and take the laptop apart to remove the broken LCD and install the replacement LCD. Doing this requires more advanced knowledge about laptop computers, and how to take one apart and put it back together.

You can find instructions on the Internet to help with taking your laptop apart, replacing the LCD screen, and putting everything back together again.

Some manufacturers will not sell replacement LCD screens to end users. You may have to purchase a replacement screen through a computer parts retailer or through an auction website, like eBay.

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

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Use our “Get an Estimate” tool to review potential costs if you get service directly from Apple. The prices shown here are only for screen repair. If your iPhone needs other service, you’ll pay additional costs.

If you go to another service provider, they can set their own fees, so ask them for an estimate. For service covered by AppleCare+, your fee per incident will be the same regardless of which service provider you choose.

Your country or region offers AppleCare+ for this product. Screen repair (front) is eligible for coverage with a fee by using an incident of accidental damage from handling that comes with your AppleCare+ plan.

The Apple Limited Warranty covers your iPhone and the Apple-branded accessories that come in the box with your product against manufacturing issues for one year from the date you bought them. Apple-branded accessories purchased separately are covered by the Apple Limited Warranty for Accessories. This includes adapters, spare cables, wireless chargers, or cases.

Depending on the issue, you might also have coverage with AppleCare+. Terms and Conditions apply, including fees. Feature availability and options may vary by country or region.

We guarantee our service, including replacement parts, for 90 days or the remaining term of your Apple warranty or AppleCare plan, whichever is longer. This is in addition to your rights provided by consumer law.

Replacement equipment that Apple provides as part of the repair or replacement service may contain new or previously used genuine Apple parts that have been tested and pass Apple functional requirements.

No, the liquid damage service includes all parts and labor required to the get phone back to fully functional condition, but does not include liquid damage sensor replacement.

Due to its high cost, the logic board is the only part in the device that is not included in the liquid damage service. If the logic board has been irreversibly damaged, we will not be able to repair it and you will be refunded, minus the cost of return shipping if applicable.

It depends on the liquid. We reserve the right to decline liquid damage repair if the phone or device has been exposed to a liquid that may be hazardous in any way. Please call us at 1-877-320-2237 to inquire and make the proper arrangements.

Absolutely. Although salt water is corrosive and can be very damaging to electronic devices, we can still attempt to repair it. Our success rate on salt water damage is lower than that of a device that has been dropped in other liquid, but there is still a good chance that it can be repaired. If we cannot repair it, we will refund you the repair cost, minus the cost of return shipping if applicable.

First and foremost, do not attempt to turn the device on as that can cause a serious short circuit. Next, send the device in for our liquid damage service as soon as possible. The sooner we receive a liquid damaged device, the higher the chance we can repair it.

It is possible that a device can begin working normally on its own after liquid damage, but it is very uncommon. It is more likely that corrosion and residue deposits will begin to form on the logic board making the repair process more difficult. We recommend sending the device in as soon as possible, even if it is still wet. The sooner we receive a liquid damaged device, the higher the chance we can repairing it.

Probably. Even if only one function is not working, it could be caused by a variety of things. When a device has been liquid damaged, standard rules do not apply. This why we offer a liquid damage service specially tailored for liquid damaged devices.

Most liquid damage services are done in 45 minutes or less, depending on the level of damage. However, this estimate can vary depending on the extent of the damage to the logic board and other components.

If we are unable to repair your liquid damaged device for any reason, your payments will be refunded, minus the cost of return shipping if applicable, and your device will be returned. If your device could not be repaired and you do not want the device back or do not wish to pay for return shipping, please let us know and we will recycle the device at our repair facility.

Whether you stepped on it, leaned on it, dropped it, closed it on your keys, or subjected it to extreme temperatures, one thing’s for sure: right now you can barely see anything on your laptop screen!

Some other issues people may have with their screens are vertical lines or bars; these may be white, a bright color, or solid black, as below, and commonly result from a failure of tiny electrical connections within the screen’s body.

In all these situations, the screen itself has been ruined – the glass cannot be repaired, and humans are incapable of fixing the tiny connections that have broken.

But all is not lost!Replacements for PC laptop LCDs are usually fairly inexpensive – around $150-200 in most cases.  We can find the perfect matching part for your screen and install it in short order (our primary vendor is in Apex and can usually get screens to us the next day), and all will be as good as new!

We also can replace Apple MacBook displays!  We source entire display assemblies from a vendor in Virginia which means you can get your Mac screen replaced in as little as 24 hours! Try getting service that fast anywhere else!

You could almost see it happening in slow motion: your smartphone is in your hand one moment, and the next thing you know, it’s barreling toward the ground in a nosedive. Sometimes the layers of glass and plastic will hold up, but all too often, this scenario will lead to a chipped, cracked, or broken phone screen.

Thanks to the right-to-repair movement, the options for mending a broken phone screen have expanded. Between simple DIY fixes, third-party repair shops, and even manufacturer-sponsored mail-in programs, there’s an option for everyone.

It all boils down to a difficult-to-reach compromise between consumer desires and engineering reality. In other words, we want phones with maxed out displays that also feature an elegant design. However, those slim edges and nearly bezel-less screens have to make some concessions in the durability department.

But regardless of the design specifics, it’s really about elastic energy, according to Red Zombie, a Clearfield, Utah-based repairs and accessories shop.

“When you drop your phone, elastic energy stored in the phone’s glass is converted into surface energy, which is why your glass cracks,” the company notes in a September 2018 blog post. “[W]hen you drop your phone, the force of impact will overcome the surface compression, resulting in small stresses that could lead to the shattering of your screen.”

To combat this reality, manufacturers like Apple and Samsung are constantly experimenting with tougher kinds of glass to absorb the impact. Red Zombie says most companies mix zinc into aluminum to create a strong base for the body of the phone.

Broken screens come in various levels of severity—from light scratches, to spiderweb-like patterns, to entirely missing chunks of glass—and you could be dealing with anything from a completely shattered display and a broken phone, to a simple cosmetic issue.

First, you should assess the damage, which means getting your phone on a solid surface and under a good light, not just giving it a quick once-over before stuffing it back in your pocket. With a little bit of stress testing and careful prodding you should be able to work out whether the screen is about to fall off or fail completely. In a lot of cases it will stay in place, cracks and all, so you can at least keep tweeting, as long as the screen is still visible and functioning.

If the phone is seriously damaged, back up your data as quickly as you can, making sure all of your photos, videos, and important files are saved somewhere else just in case it dies completely and you can’t get the phone working again. If it’s already stopped functioning, then a professional repair is probably your best bet.

The name of the game here is, “hold out until I’m eligible for an upgrade.” If you want to keep using the cracked phone, and don’t want to risk losing glass or slicing up your fingers, cover the screen with a layer of packing tape. Line everything up carefully and trim it with an X-Acto knife, and it may look almostlike a real screen protector.

This is the gussied-up version of the packing tape solution. Using a screen protector ensures you have no seams and a clean line around the edges of the screen. Granted, that might not be much of a concern when there’s a spiderweb of cracks underneath.

It’s possible to replace a broken phone screen on your own. We’ll refer you to iFixit for their excellent, step-by-step guide with photos. A few key things to keep in mind here: Before you decide to go this route, look into the cost of a replacement screen. Today’s phone screens, which incorporate touch interaction and possibly biometric sensors, don’t come cheap.

You should also look into the warranty situation. If you’re the kind of person who is willing to fix a phone yourself, you’re probably not too worried about maintaining your warranty—but it still can’t hurt to know if you’re going to void it.

Finally, unless you’re already accomplished at repairing modern solid-state electronics, you probably lack the specialized tools you’ll need for the job. Luckily, iFixit sells a handy kit that includes pretty much everything you’ll need, with the possible exception of the iOpener, a tube you heat up and apply to the phone to soften its adhesives.

You can always just take your broken phone screen to a professional repair shop. If you’re an iPhone person, look for your local Apple Store here or consider trying out Apple’s mail-in repair program. Best Buy will work on iPhones and Samsung phones. And finally, UBreakIFix has more than 700 locations across the country.

Kevin is a writer and editor living in Brooklyn. In past lives he’s been an economist, computer salesman, mathematician, barista, and college football equipment manager.

Before joining Pop Mech, Courtney was the technology reporter at her hometown newspaper, the Pittsburgh Post-Gazette. She is a graduate of the University of Pittsburgh, where she studied English and economics. Her favorite topics include, but are not limited to: the giant squid, punk rock, and robotics. She lives in the Philly suburbs with her partner, her black cat, and towers upon towers of books.

Whether it"s cracked or has one too many blown pixels, a broken laptop display can stop you dead in your tracks. But with the right tools, a little technical know-how, and a bit of patience you can replace a damaged LCD.

I also suggest you watch my earlier video on what to know before trying to fix a smartphone or tablet. It"s not specifically about laptops, but the information is still relevant, and it will help you decide if you should repair the machine yourself or take it to a shop.

Lastly, understand that if you follow the instructions in this video, you do so at your own risk. Neither CNET nor any of its representatives can be held responsible for injury, damage, or loss of data.

To begin your fix, you"ll need a few simple tools and a replacement LCD screen. For tools, I recommend a screwdriver set with a variety of small bits, such as a Phillips #00 and a Torx T5. It"s also a good idea to have a few thin metal blades or plastic spudgers. These are really handy for removing the trim that surrounds the screen.

As for the replacement LCD, you should be able to buy one either from the laptop manufacturer"s authorized parts dealer or a third-party supplier. Depending on the screen, they usually cost between $50 and $250 dollars -- more if it"s a high-end display or if you buy an OEM replacement. Regardless, you"ll want to buy a new screen that matches your broken one exactly. The only sure way to do this is to remove the broken one.

After disconnecting the power supply and removing the battery, carefully examine the bezel around the screen. You"ll need to remove this bezel to access the screws that hold the LCD panel in place.

On this laptop, several rubber cushions hide screws, which hold the bezel in place. I"ll need to remove these cushions and the screws that are underneath.

With the hidden screws removed, I use a thin metal blade to pop loose one of the bottom corners, and work my way around the bezel with a plastic spudger.

Note: Your laptop may not have cushions or hidden screws. The bezel may simply snap onto the lid or be held in place with double-sided tape. Just adapt my instructions to fit your specific laptop.

With the LCD"s mounting brackets exposed, you can remove the screws that secure it to the lid. Then rest the display front-side-down on the case and disconnect its cable.

If your laptop was made before 2010 and has a LCD with fluorescent backlights, it will likely have two cables. But as this is an LED-backlit LCD, it only has one.

Now, locate the manufacturer"s label and note the model number. Using this information you should be able to buy an exact match for your broken screen.

If the dimensions, mounting brackets, and connector all match, you"re ready to install the screen. Connect the new panel to the cable, position the panel in the lid, and secure it using the appropriate screws.

Before reattaching the bezel, it"s a good idea to test the new panel. Reconnect the battery and power cable and turn the machine on. If the display works, you can reattach the bezel and any external screws and rubber cushions. The repair is now complete.

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.

1. #Measure GM1~GM14, the values are arranged from large to small. In general, a certain gamma value will be abnormal in the case of NG, then try to replace gamma-IC;

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.

Polarizer / CELL damaged To change the polarizer, a polarizer attaching machine is required The degree of whitening of the picture changes with different viewing angles

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. #If the whiteness changes significantly with the view Angle, and above 1&2 analysis is all OK, polarizer NG or CELL NG can be basically determined.

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.

Lamp line is broken Replace the lamp tubing 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.

4. #The above disassembly judgment can basically solve the problems of point-off in the market. If you can’t tell the truth, you can directly change the lamp tube.

Lamp line is broken Reconnect / replace lamp tubing Depending on the protection status of the power board, it may be a backlight with a dark band or it may be a point-off.

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.

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