lcd screen flickering backlight made in china

• 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.).

lcd screen flickering backlight made in china

• 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.).

lcd screen flickering backlight made in china

The reason for LCD Display flashing screen: shielding coil; Signal interference; Hardware; Refresh frequency setting; Monitor time is too long; Too high frequency; Similar to the frequency of the light source.

LCD display, divided into CCFL backlight and LED backlight two. When the display uses CCFL backlight (that is, usually said LCD display), backlight power off, the lamp will continue to emit light for about a few milliseconds; When the display is backlit with an LED (commonly referred to as an LED backlight display), the characteristics of the LED light allow it to control the speed of switching on and off the power supply more quickly, so there will be no continuous lighting when the power is off. Therefore, the LED backlight flashing screen will be more obvious than the CCFL backlight.

LCD is easily disturbed by a strong electric field or magnetic field, and sometimes the screen jitter is caused by the magnetic field or electric field near the LCD. To liquid crystal display ruled out clean everything around interference, the computer can be moved to an empty table, surrounded by then boot test, if the screen dithering phenomenon disappears, it means that your computer where you found it has a strong electric field or magnetic field interference, please send suspiciously (e.g., speakers of the subwoofer, power transformers, magnetizing cup, etc.) from a computer nearby.

Turn off the LCD and turn it back on a few times to degaussing. (today’s monitors have automatic degaussing when turned on.) LCD screen flashing reason: LCD screen refresh rate problem & display and video card hardware problems display.

In fact, the main reason for the LCD screen dither is the LCD refresh frequency set lower than 75Hz caused by, at this time the screen often appear dither, flicker phenomenon, we only need to put the refresh rate to 75Hz above, then the phenomenon of the screen dither will not appear.

The frequency of the LCD display screen itself is too high, which leads to screen flashing. Generally, there are a few problems in real life that cause screen flashing due to high frequency. People’s naked eyes have no flicker feeling for the picture over 60hz, while the design standard of the general LCD display screen is basically maintained on this data, so the frequency will not be too high under normal circumstances, but at the same time, the screen itself can not be ruled out fault. After the relevant instrument measurement is indeed the fault of the screen itself, in addition to the replacement of a new monochrome LCD screen is the design of equipment-related software.

LCD display and light source frequency close to the situation of the splash screen is very common, because the frequency of the different light source is different, in certain cases, the frequency of the LCD display screen and artificial light similar flicker is also more common, the best way at this time is a kind of artificial light or LCD display equipment, avoid the splash screen.

LCD display, although the price is not high, there are various problems. It will have various effects on our work and life. In ordinary life, when using LCD, as long as pay attention to the following points, will extend the life of LCD.

lcd screen flickering backlight made in china

Electronic circuits the tend to draw the most current, will run hotter, and heat degrades electronics, so when shooting trouble, It makes the most sense to start with those item. In LED flat screens, its the LED back light panel.

Best way I have found to diagnose a back light problem is to place the Tv in a very dark room, and turn it on in the set up menu, and using a bright flash light pointed at the screen, and see if one can observe the setup screen.

As mentioned elsewhere, the LED back lights are LEDs mounted in a strip. which each strip draws a good amount of DC Current,which is why a flat screen feels warm to the touch when operating.

Changing the LED back light strips involves disassembling the many layers of the flat screen, not an operation for the faint of heart ! In that one has to be careful that the display isn’t damaged in the disassembly process, and needs to be preformed in a very Clean environment as any dust/ stuff that gets trapped between the layers will be visible all the time the display is on, assuming your successful getting it to light up again.

With the sell price of new flat screens tv coming down, ( 32 in 720 P Insignia Brand At Walmart on line this morning is $89.00.{12_29_2018}. The repair shop has no way to a descent hourly way to pay him self, which is why I left the field in 1978.!!

If the dead flat screen is not your main go to Tv, & have a place where one can leave a flat screen disassembled for the long periods of time for the container ship to come from China to Long Beach Ca., and you work for free, then !&&* yeah give your best shot. You Tube videos are your BEST friend.

lcd screen flickering backlight made in china

When the monitor is turned on the monitor works then after 3 minutes or so it starts to flicker and never stops. If the monitor is turned off and on it is still flickering. I have to wait like 10 minutes then put it on but at this point it will work then after 3 Mims or so again it will start to flicker.

lcd screen flickering backlight made in china

Most laptop screens have LCD or LED displays that although may function correctly most of the time can have issues that can cause flickering. There are a lot of different reasons why the screen on your laptop may flicker. Perhaps it is hardware issues such as the connections on the screen but it can also be software issues. Whatever the cause, this problem is fairly common which means that it is easily fixed.

In this article, we take a look at some of the reasons why your laptop"s screen flickers and also provide you with some of the most effective solutions to this problem.

Some third-party apps have been known to cause a computer screen to flicker on Windows 10. These include Norton AV, iCloud, and IDT Audio. If you have one of these apps or other third-party apps that you think maybe incompatible with the system, it may be a good idea to update them.

Updating your display drivers may also be able to help you fix this flickering issue once and for all. But to safely do this, you need to boot the computer in Safe Mode, uninstall the current display adapter, and then check for driver updates. Here"s a step by step guide to do that;

You can also change the refresh rate of your monitor. The refresh rate refers to how many times the screen redraws each second. This setting may be related to older desktop monitors, but it may also affect the quality of LCDs in Laptops as well. To modify the screen"s refresh rate, follow these simple steps;

Data loss is another problem that many laptop users face. Like this flickering issue, data loss can also be caused by several issues including accidental deletion, malware and viruses, and even hardware and software issues. Therefore when you lose data on your laptop, you need a solution that will make the process of data recovery very easy, while ensuring a very high recovery rate. This tool is

This laptop screen flickering issue is a problem that can occur at any time. The solutions above should be able to help you fix the issue once and for all. Let us know in the comments section below if the solutions worked for you. As always questions and comments on this and any other issue are also welcome.

You can stop your laptop screen from flickering by disabling Windows Desktop Manager. Create alignment between the refresh rates of your external monitor and your laptop. Go to the manufacturer"s website and get the latest drivers to download.

lcd screen flickering backlight made in china

The phone screen flickering phenomenon on your smartphone is not a very cool experience. For people with sensitive eyesight, it can disturb them and cause eye problems. Having a working display is pretty much linked to the proper use of your smartphone, which is why we are going to show you what to do if your phone screen is flickering or shaking.

Software issues causing flickering in your smartphone is usually as a result of an app needing a higher resolution than what your phone’s GPU can provide. Usually, your smartphone’s Graphics Processing Unit is the component of your smartphone that processes and renders images on your phone.

But there are times that some apps or videos might need a higher resolution, and this is where the problems arise. In times when apps or videos need to be rendered with a higher resolution than what your GPU can provide, the rendering is usually done via an encoder from your Central Processing Unit. Mobile screen flickering then happens when your phone oscillates between using the GPU and the CPU encoder.

Hardware issues with your smartphone that can cause phone screen flickering usually have to do with the LCD panel itself. There could be a faulty connection with the LCD panel itself, or the screen connector could be faulty.

This is the reverse with a bad network. Remember, graphics are rendered via your phone"s GPU. With a bad network, the graphics aren"t exactly "flowing" for your GPU to accurately render them, and this constant breakage is what causes flickering. The only antidote to this problem is to get connected to a faster network.

Doing this can help refresh your phone"s components, especially if the phone is flickering not so seriously. Sometimes, your phone"s processor might have too much to do and transmit to the GPU, and that can also cause phone screen flashing.

Clearing your phone"s cache can also help to stop the phone screen flickering or blinking. Just like an app cache, your phone"s system cache is a storage of data that your phone needs to boot up and work properly.

If data associated with your phone"s GPU is corrupted or isn"t being processed properly, flickering will occur. In this case, clearing the cache will solve the problem.

Booting your smartphone in safe mode is also another option to try and stop phone screen flickering or shaking problem. Take note, booting in safe mode won"t help "cure" the flickering. It is just to help you find out if the screen still flickers or not. If it doesn"t, then it means the flickering is caused by a software glitch.

When your phone screen comes back on, you"ll be prompted to allow your phone boot in safe mode. Tap "OK" and wait for the phone to boot up in safe mode.

In the course of using your phone, if your phone screen is flickering or shaking, then it"s very possible that it"s that application causing the glitching.

Uninstall the application and check your screen"s performance afterward. If it doesn"t flicker, the application was responsible for the shaking. If it does, check out our other fixes.

The flickering of your phone"s screen might also be caused by unexpected bugs in your phone"s brightness settings. The usual culprit is the auto-brightness setting.

But sometimes, there might be a hardware issue or a software glitch resulting from either a recent update or the software being out of date. Either of this will cause flickering and shaking for your screen.

If the phone screen flickering or glitching persists after you"ve tried all the previous fixes, then it"s likely to be a hardware issue that can only be resolved by professionals.

lcd screen flickering backlight made in china

If the issue happens on the BIOS configuration screen, it could be a processor issue. Try using the processor on a different known working and compatible system (applies only on Intel® boxed processors). If issue persists, contact Intel Support.

lcd screen flickering backlight made in china

Light leak or backlight bleeding is often noticeable around the edges or the sides of a screen. Especially while it is displaying a dark background or is in a dark environment.

NOTE: This article provides information about common issues that are seen on LCD screens. It is not something specific to a particular Dell computer but is something that can be seen on any LCD screen by any manufacturer.

lcd screen flickering backlight made in china

Computer problems are a headache, and a flickering laptop screen can definitely cause one. It can destroy productivity in the office, and turn a couch-cinema experience into a royal inconvenience. The constant blinking only serves to distract and frustrate, so the moment it starts, you’ll be in need of a quick solution.

Fixing a flickering laptop screen doesn’t necessarily require a trip to the PC repair shop. Solutions as simple as lowering and raising the screen repeatedly or updating your graphics card drivers may solve your blinking screen dilemma. But what causes a laptop screen to flicker and what are the many fixes that work to stop it? This guide will answer all of your burning questions.

The causes behind laptop screen flickering on Windows 10 PCs can be boiled down to a few common culprits. An aging PC shows signs of regular wear and tear as years pass by, and loosened internal cables can create a number of nasty glitches. Newer computers with screen flickering problems may be the victims of incompatible applications or defective hardware. Let’s deep dive into the many reasons why your laptop screen has started flickering.

Personalizing your PC into your own unique digital hub means downloading all of your favorite applications and programs. In certain cases, your PC won’t be able to handle the parameters and specs of certain applications which can cause screen flickering.

Step 2. With the task manager open, watch your screen for any flickering. If everything on the screen flickers except the task manager, then you’ve got an incompatible app living on your PC.

Malfunctioning internal devices can lead to poor display resolutions, glitchy internet connectivity and of course, a flickering laptop screen. Both visual aspects and functionality in PC components suffer the consequences of outdated drivers when patches, updates, and bug fixes go by the wayside.

Wires connecting your laptop screen to the base keyboard chassis can become loose or damaged over time, potentially resulting in a flickering laptop screen. In order to test if your problem stems from malfunctioning wires, lower and raise your laptop screen repeatedly to check if the flicker is related to movement. If certain angles flicker while others don’t, chances are you’re dealing with faulty internal wiring.

Figuring out the reason behind your flickering laptop screen will better assist you in your efforts to finding an easy DIY solution. Since a blinking screen can ruin the PC user experience, you’ll want a quick-fix ASAP. Use these 5 solutions to nip that buggy screen in the bud.

Step 4. Under “Advanced startup” select “Restart now.” This will reboot your computer and send you to a blue troubleshoot screen that lets you manage everything from startup repairs to system restores.

Windows 10 does an excellent job of updating your PC with necessary fixes and patches but some important drivers go by the wayside. If your laptop screen has started flickering, you may be overdue for a manual driver update.

If you’re finding that your laptop screen flicker only occurs when you’ve linked your PC to an external monitor, the problem could be the refresh rates. A device’s refresh rate is a measurement of the number of times the screen redraws in one second. A laggy refresh rate can look like flicker when in reality you’re just dealing with slow video processing.

If you’ve tried these many solutions and find yourself stuck with a flickering screen, taking it to an expert PC technician may be your best solution. Computers are complex. Sometimes leaving your PC problems in the hands of an expert delivers the results you’re looking for faster and more efficiently than simple DIY tutorials can.

lcd screen flickering backlight made in china

An LED-backlit LCD is a liquid-crystal display that uses LEDs for backlighting instead of traditional cold cathode fluorescent (CCFL) backlighting.TFT LCD (thin-film-transistor liquid-crystal display) technologies as CCFL-backlit LCDs, but offer a variety of advantages over them.

While not an LED display, a television using such a combination of an LED backlight with an LCD panel is advertised as an LED TV by some manufacturers and suppliers.

Unlike OLED and microLED displays, LCDs cannot achieve true blacks for pixels which are illuminated by the backlight. Some LED-backlit LCDs use local dimming zones to increase contrast between bright and dim areas of the display, but this can result in a "blooming" or "halo" effect on dark pixels in or adjacent to an illuminated zone.

The local dimming method of backlighting allows to dynamically control the level of light intensity of specific areas of darkness on the screen, resulting in much higher dynamic-contrast ratios, though at the cost of less detail in small, bright objects on a dark background, such as star fields or shadow details.

A 2016 study by the University of California (Berkeley) suggests that the subjectively perceived visual enhancement with common contrast source material levels off at about 60 LCD local dimming zones.

LED-backlit LCDs are not self-illuminating (unlike pure-LED systems). There are several methods of backlighting an LCD panel using LEDs, including the use of either white or RGB (Red, Green, and Blue) LED arrays behind the panel and edge-LED lighting (which uses white LEDs around the inside frame of the TV and a light-diffusion panel to spread the light evenly behind the LCD panel). Variations in LED backlighting offer different benefits. The first commercial full-array LED-backlit LCD TV was the Sony Qualia 005 (introduced in 2004), which used RGB LED arrays to produce a color gamut about twice that of a conventional CCFL LCD television. This was possible because red, green and blue LEDs have sharp spectral peaks which (combined with the LCD panel filters) result in significantly less bleed-through to adjacent color channels. Unwanted bleed-through channels do not "whiten" the desired color as much, resulting in a larger gamut. RGB LED technology continues to be used on Sony BRAVIA LCD models. LED backlighting using white LEDs produces a broader spectrum source feeding the individual LCD panel filters (similar to CCFL sources), resulting in a more limited display gamut than RGB LEDs at lower cost.

The evolution of energy standards and the increasing public expectations regarding power consumption made it necessary for backlight systems to manage their power. As for other consumer electronics products (e.g., fridges or light bulbs), energy consumption categories are enforced for television sets.

A first dynamic "local dimming" LED backlight was public demonstrated by BrightSide Technologies in 2003,Sony in September 2008 on the 40-inch (1,000 mm) BRAVIA KLV-40ZX1M (known as the ZX1 in Europe). Edge-LED lighting for LCDs allows thinner housing; the Sony BRAVIA KLV-40ZX1M is 1 cm thick, and others are also extremely thin.

LED-backlit LCDs have longer life and better energy efficiency than plasma and CCFL LCD TVs.mercury, an environmental pollutant, in their manufacture. However, other elements (such as gallium and arsenic) are used in the manufacture of the LED emitters; there is debate over whether they are a better long-term solution to the problem of screen disposal.

Because LEDs can be switched on and off more quickly than CCFLs and can offer a higher light output, it is theoretically possible to offer very high contrast ratios. They can produce deep blacks (LEDs off) and high brightness (LEDs on). However, measurements made from pure-black and pure-white outputs are complicated by edge-LED lighting not allowing these outputs to be reproduced simultaneously on screen.

Quantum dots are photoluminescent; they are useful in displays because they emit light in specific, narrow normal distributions of wavelengths. To generate white light best suited as an LCD backlight, parts of the light of a blue-emitting LED are transformed by quantum dots into small-bandwidth green and red light such that the combined white light allows a nearly ideal color gamut to be generated by the RGB color filters of the LCD panel. The quantum dors may be in a separate layer as a quantum dot enhacement film, or replace pigment-based green and red resists normally used in LCD color filters. In addition, efficiency is improved, as intermediate colors are no longer present and do not have to be filtered out by the color filters of the LCD screen. This can result in a display that more accurately renders colors in the visible spectrum. Companies developing quantum dot solutions for displays include Nanosys, 3M as a licensee of Nanosys, QD Vision of Lexington, Massachusetts, US and Avantama of Switzerland.Consumer Electronics Show 2015.quantum dot displays at CES 2017 and later formed the "QLED Alliance" with Hisense and TCL to market the technology.

Mini LED displays are LED-backlit LCDs with mini-LED–based backlighting supporting over a thousand full array local dimming (FALD) zones, providing deeper blacks and a higher contrast ratio.

LED backlights are often dimmed by applying pulse-width modulation to the supply current, switching the backlight off and on more quickly than the eye can perceive. If the dimming-pulse frequency is too low or the user is sensitive to flicker, this may cause discomfort and eyestrain similar to the flicker of CRT displays at lower refresh rates.

Novitsky, Tom; Abbott, Bill (12 November 2007). "Driving LEDs versus CCFLs for LCD backlighting". EE Times. Archived from the original on 28 November 2010. Retrieved 21 November 2020.

Controlling Power Consumption for Displays With Backlight Dimming; Claire Mantel et al; Journal of Display Technology; Volume: 9, Issue: 12, Dec. 2013; https://ieeexplore.ieee.org/document/6520956

Energy Efficiency Success Story: TV Energy Consumption Shrinks as Screen Size and Performance Grow, Finds New CTA Study; Consumer Technology Association; press release 12 July 2017; https://cta.tech/News/Press-Releases/2017/July/Energy-Efficiency-Success-Story-TV-Energy-Consump.aspx Archived 4 November 2017 at the Wayback Machine

LCD Television Power Draw Trends from 2003 to 2015; B. Urban and K. Roth; Fraunhofer USA Center for Sustainable Energy Systems; Final Report to the Consumer Technology Association; May 2017; http://www.cta.tech/cta/media/policyImages/policyPDFs/Fraunhofer-LCD-TV-Power-Draw-Trends-FINAL.pdf Archived 1 August 2017 at the Wayback Machine

lcd screen flickering backlight made in china

When TechRepublic first published a tutorial to correct flickering monitors, it was 2001. Since then, the computer world has changed significantly, and screens have come a long way. For example, CRT monitors — which were the norm back then — are much more sensitive and temperamental than the modern LED screens many of us use today.

But, despite this and many other advancements in screen technology, flickering screens are still an issue. And because screens have evolved as device types have diversified, the quest for solving this kind of problem has grown more complex.

In this guide, we’ll offer you tips for troubleshooting your flickering screen across laptops, mobile devices, desktops and a variety of other device types.

There are many reasons why a screen could be flickering, including physical damages to hardware, software problems and bugs in specific applications. Changes in settings and malware can also cause your computer or mobile screen to perform poorly.

Don’t lose hope if your device or computer screen seems to be out of play. There are several things you can do that might solve the problem quickly, whether you’re using a desktop computer, a connected monitor, a laptop, a smartphone or a tablet. The best troubleshooting route will depend on what device you are experiencing problems with as well as what operating system you are running.

In general, these are some of the best places to start when correcting a flickering screen. Remember that the higher the rate, the more energy the device will need to refresh the screen. When using smartphones, tablets and laptops, higher rates can deplete batteries more rapidly.

Laptop screens have cables that run hidden inside the frame and core of your computer. While you will not be able to rapidly fix this without professional help, you can identify if the cables are the problem.

To check these cables, start by turning your laptop on. Once the screen begins to flicker, slowly close and open the screen. If you notice changes to the flickering when you open and close the screen, that’s a good indicator that there are issues with the inner cables. Unfortunately, unless you have advanced computer hardware repair skills, you will need to take your laptop to a trusted repair shop to fix this issue.

Another important aspect of your device to check is the monitor refresh rate. The monitor refresh rate is the number of times the screen image is refreshed in a second, as measured in Hertz. If the refresh rate is too slow or otherwise under-optimized, you may experience issues with screen flickering and lag times.

While most users never adjust the refresh rates, it is a key component for how well your screen performs – it also affects battery life. Faster monitor refresh rates make it possible to rapidly move videos and images, as well as create a smoother motion experience when browsing or creating content.

Flickering screens on laptops, smartphones and tablets may be caused by physical damage, like after the user has dropped the device. In hardware damage cases, only professional support can help you identify and solve the problem. Before taking your device to be fixed, you might want to check out a couple more of our tips.

Nearly all devices use a video card to properly display images. In desktop computers, this device needs to be properly positioned on the motherboard or it will cause a lot of problems, which could include a screen flicker. You can check your desktop computer video card by turning your computer off and opening the outer case.

There are a couple of steps you can take to fix your Windows or Mac screen if the above steps have failed. Here are additional tips for troubleshooting your Mac and Windows devices.

Although this may seem all too simple, sometimes restarting your computer is exactly what you need to fix a flickering screen. A full shutdown is the best way to completely reset and refresh your Mac in order to test this method.

True Tone is designed to automatically correct images based on light levels, but this feature can cause a screen to flicker. To disable True Tone, go to the Apple menu, then System Preferences and click Displays. Now select your display and click on Display Settings. From here you can uncheck the True Tone checkbox (Figure F).

The NVRAM — or PRAM — is memory Apple uses to store system settings in your Mac. These settings may be the cause of a flickering screen. You can reset the NVRAM on an Intel-based Mac, though not on Apple Silicon models.

Your device’s Task Manager can be used to see if an app or a driver is making the screen flicker. To do this test, press Ctrl + Alt + Delete, and the Task Manager will open. If the screen flickers but the Task Manager does not, then you have a bad driver or app problem; if the Task Manager flickers, you might have a malfunctioning hardware problem.

An incompatible driver or app can cause screen flickering problems. Microsoft’s official support page for Troubleshoot screen flickering in Windows has a detailed step-by-step on how to solve driver and app display problems like this.

As a last resort, you can back up your phone data and do a hard reset. Resetting a phone to factory settings will wipe it clean, but it will also restore the initial settings and remove any malware that may be causing the flickering.

A flickering screen can be a real nightmare; fortunately, screens are more resilient than they were a couple of years ago. Additionally, there are numerous tricks, tips and steps you can take before even thinking about repairing your screen or replacing it for a new one. Regardless of what kind of screen you’re struggling with, this guide offers great initial resources for solving the problem.

lcd screen flickering backlight made in china

Fortunately these had 3-year warranties, and ALL 4 OF THEM went bad in 1-2 years! Samsung "fixed" each of them for free, although it was an annoyance to be without a monitor until each was fixed. All my replacements were made in China. Unfortunately, after the 3-year period, 2 of them went bad again. I stored one just for parts, and then recently a 2nd one began to flicker (for 5-10 minutes) after restarting the computer or when turning on again after screen save. For my application, I need 3-4 matching monitors (preferably 4, all side-by-side) and I really didn"t want to spend $600 - $1000 for 4 new 22-24 inch monitors, so I did some online searching and found tons of information describing how to fix the problems.

The flickering problem is usually caused by a bad power-supply board, although it *might* also be caused by bad/worn out CCFL backlight fluorescent tubes. Most often with the flickering problem, you can open up the monitor, take out the power supply board, and inspect the board for blown capacitors, which usually have a noticeable bulge in the cylinder or the top of the capacitor. The problem brand most often mentioned is "CapXon" which are indeed a crappy brand of capacitor, per reports from many users (and my board too). There are pictures of these boards and blown capacitors online, in particular at youtube or badcaps.net (look for a 226BW thread).

My other monitor, however, was at first a mystery as to what was wrong. It did not flicker. Rather, it would come on for 1 second and then the display would go dark. If one would look very close-up at the dark screen, you could see that the image was there, it just wasn"t lit up. I didn"t know squat about these things, but after some more research and some testing with swapping of boards, I decided that it was the actual monitor screen that was the problem and not either the power-supply or the video card. It turns out this monitor (whose model label says it"s "226BW C") uses a different power supply board (IP-43130A, *not* IP-45130A). These are different sizes from each other, and they don"t fit properly in the wrong case. The wire connections, however, are the same, and so I hooked them up using some towels as electrical insulators, plus I swapped the actual monitor screens, and through various combinations, I proved that my problem wasn"t the power supply or the video card, which meant it was the screen itself. (WARNING: I know how to be safe with exposed 120V circuits. The boards weren"t well grounded the way I tested it, and it might have screwed them up but it didn"t. Most people shouldn"t try this, plus if you don"t have multiple 226BW monitors you wouldn"t even have the parts to swap around).

By the way, at first I was convinced the video card was the likely cause because it actually looked like it was somewhat burned. The color varied across the board in a way that was likely caused by high circuit temperatures. However, when I swapped monitor screens, everything worked so I knew the video card and power-supply were both working. This implied that the original monitor screen was bad.

The bad monitor screen has a label that says: Model M220EW01 V.0 by AU Optronics. I found an eBay seller (servermonkey) that had that similar model but "V.2". It turns out that the price is cheaper by skipping eBay and using the direct web site http://www.servermonkey.com On eBay, it was $90+5, and now it might be even higher. On the direct site, it was $80+7. ( EBay has Buyer Protection but I took a chance with a direct purchase). That"s a good price I think, but to fix an old unreliable monitor, I thought twice about it. New 22 inch monitors can be had for only $150, but for me, I needed matching monitors, so I went ahead and bought it.

That turned out to be just an Ok decision, and not actually necessary, and there were some drawbacks. Yes, the replacement screen works with my 226BW. I think that is the same panel model used by Sony Vaio (??) and maybe some other 22 inch monitors, who knows. But I failed to consider two differences which are not really that important to most people, but... The first is that the replacement is a glossy screen. (I didn"t even think to ask the seller what it was). Personally I much prefer the original matte screen. Once it"s in use, however, you hardly notice it. The second is that the colors are somewhat different hues than the originals. Because I have 4 monitors side-by-side, I easily notice the difference. I tried a little bit to adjust the brightness and hue, but didn"t get a good match. Maybe with more effort it might have worked.

That got me thinking about my original bad screen, and what specifically was wrong with it. I hooked it back up, and saw as before that the image was still there, and the backlight flashed on for about a second then it went dark. Some websites mentioned that it could be that the CCFL"s went bad and could be replaced. What the heck does that mean??! Turns out it simply means that the screen has 2 pairs of tiny-diameter fluorescent light bulbs that are 22 inches long, and they are found along the top and bottom edges of the screen when you open it up.

I"m pretty handy with detailed work. Replacing those CCFL"s was kinda tricky, but I pulled it off. I bought replacement bulbs from http://www.ccflwarehouse.com . Search for "M220EW01" and you can buy 2 pairs of bulbs for $33+5 That"s enough for one monitor. Perhaps the color spectrum of those CCFL"s is ever so slightly different from the original, but it is very close to the same. In fact, I can"t be sure it"s not the same because my video card and screen are slightly different from my other three 226BW monitors, and they all look almost identical brightness and hue.

Start with a very clean dust free work area, and once you get the metal frame apart with gentle prying on all the edges, start using (latex or similar) gloves. You will remove the electronic LCD screen first, then behind that is a 1/4 inch thick plastic sheet surrounded by multiple layers of clear or opaque plastic. If you get fingerprint smudges, or flecks of dust or hair stuck anywhere in the stack, you will be so annoyed looking at it all the time. Keep track of EVERYTHING as you take it apart. Take pictures if necessary. There are 2 screws of one size, 3 of another. The orientation of the frame and sheets of plastic, and the wires coming from the CCFL"s must be on the proper end. Take your time and with proper attention to detail, you can get it back together and working like new. Once I got my old one apart, I could see very black rings of mercury that were deposited at the ends of the bulbs. One of the bulbs was actually broken and open. I didn"t mention this before, but when I was testing the bad screen, I could actually hear the sound of an electrical "pop" when the light came on for the 1 second. I"m certain that was the sound made because of the broken/worn out tube. The power-supply board is designed to power up 2 *pairs* of bulbs, no more and no less. If any one bulb goes bad, it will screw up at least the adjacent bulb, and due to protection circuitry on the board, it will probably shut off the power to the other, possibly "good" pair of bulbs. I tried turning on the power supply with less than all four good bulbs connected and it never worked. I should mention that there"s a possibility that the "1 second blink on then off" problem could still possibly be a bad power supply, either instead of, or in *addition* to bad CCFL bulbs.

Bottom line: I fixed both bad monitors for $29 (power supply) + $38 (CCFLs). The CCFL repair was a bit tricky and should probably not be attempted unless you"re very handy at such things. I spent $87 for a screen that I ended up not needing after all, which I"ll hang onto for a spare, or maybe just sell it.