how to test lcd screen quotation

If you already know how to use these images.For viewing the images off-line (120 kB ZIP).All images, but with the color profiles stripped, in case you

We hope this application will add value to your repair business and would greatly appreciate a positive review on the play store and encourage any comments or suggestions to be posted in the comments sections on this page. We will ensure that this application gives users the best standard for checking their LCD screen displays!

Screen Position – Choose to run the test in default or portrait mode. By default and suggested is portrait position. Your phones “Screen Rotation” feature will be disabled when the application is open and be restored on exit.

Brightness Level – The applications brightness level setting by default is set to 100%. On load, the device’s brightness level will be configured to this brightness level.

ColorSelection – Choose color pallet sequence. Choose full color range ROYGBIV, Red Green and Blue or just Black and White. Recommended is ROYGBIV full range of colors, but 90%+ of dead pixels and defects are possible to see with a reduced amount of color pallets.

White Position – The white color pallet tends to find a large range of defects. First cut white/position on. Then select “First” or “Last” position to position when the white color pallet will display in relation to the “Color Selection” pallets selected.

Welcome Image – The image that will scroll at the beginning of each LCD test. Can cut on or off. Color pallets are great, but a high resolution photo can often times quickly identify LCD screen defects right away. By default, high resolution pictures are loaded for each screen position mode. You can change the image for each position by selecting the “Choose” button. The application will browse your file directory.

Automatic – No user input is needed during the test. Welcome image and color pallets will automatically scroll till the end of the test unless you pause the test.

9. Bulk Testing Mode (On/Off) – Made for power users who need to test multiple LCD screens in one sitting. When bulk testing mode is on, the interface will give the user functions that make the transition between screen tests both safe and fast with minimal interference. (Power off options for safety and auto-start when next LCD screen is connected loops)

Power Shutdown After Test– In any mode, the power to the LCD ONLY will power off (signaled by an audio tone). Select yes or no to activate this feature.

Shutdown Method – Automatic will result in the power off of the LCD screen after the test is complete. On result will require an input to the LCD screen or buttons to finish the test and then power off the LCD screen.

Automatically start of new test when power on – On resume of power off mode enabled, the application will automatically start a new test. When option is “No”, user will be prompted on power on to resume to a new test.

Digitizer / Touch test is completed when all areas of the LCD screen have turned from white to green after a successful touch from a previous white dot to the next.

Why do you have an option to power off the LCD after the test? – With no electricity or data flowing through the flex cable, you will reduce the chances of electrical shock and have prevent damage to the main board and/or LCD assembly.

What if the LCD or Digitizer Touch Panel fails and I want to end or move on to the next test? – Hit the phones back button at any time during the test. A prompt will give you the option to resume, exit to home menu or move to next test / end test.

In the past decade, LCD monitors have replaced CRT screens for all but the most specialist applications. Although liquid crystal displays boast perfect

With more people spending more time in front of computer monitors it is important to purchase a quality monitor that will provide crisp, bright images, while reducing the strain on your eyes.

Users would include computer repair centers, system integrators, quality assurance personnel, graphic designers and anyone that cares about the quality of their monitor.

Have you ever properly checked the display quality of the LCD you habitually use? Very often people become aware of previously unnoticed problems in display quality when they run a check using test patterns and so on. This time we are going to talk about the basic points used to assess LCD display quality, and show you a simple way to test it.

Below is the translation from the Japanese of the ITmedia article "The difference in image quality is perfectly obvious! – Let"s check the LCD"s monitor" published April 22, 2010. Copyright 2011 ITmedia Inc. All Rights Reserved.

First of all, bear with us in the following simple test. Below is image data of a row of three squares. In the center of each square is a letter so faint as to be barely distinguishable, so there are three letters in all. Read from the left they make up a word. Can you see that hidden word?

That"s right. The answer is "LCD" (it is displayed if you drag the space between the brackets). We assume that probably many users could read the letters concealed in the squares.

So, the next test is much more difficult. A word is concealed in the four squares below, just as in the image above. The letters are written in colors that are very similar to those of the boxes and we expect that, in many cases, it is hard to distinguish them in your browser. We would like you to download the image and check it closely in photo retouching software or a viewer that is capable of accurate color reproduction.

This time the answer is "EIZO" (it is displayed if you drag the space between the brackets). Depending on the lighting or the user"s environment it may be hard to make out but, if you can read these four letters, the display quality, or more accurately the still image gradation expression, of your LCD is extremely high.

Let"s get down to details then. "Image quality" is the top priority of the LCD, of course. However, recently LCD prices are fiercely competitive and there are surprisingly few products that insist on high image quality and performance. It may be nice to be able to get hold of a wide-screen monitor with full HD (1920 × 1080 dot) resolution or higher fairly cheaply, but it cannot be denied that such LCDs tend not to place too much importance on display quality.

On the other hand, the increasing opportunities to enjoy things like HD videos and games, and high resolution digital photographs on the computer make LCD display quality even more important. As far as possible it"s best to use an LCD with excellent display quality in order to fully enjoy the charms of the visual content.

Even so, perhaps you think that there can"t really be that much wrong with the LCDs that so many people are using at the moment. Here we would like to show you a simple method to check LCD display quality. You can get a good idea of whether the basic display quality is good or bad just by looking at how some simple test images are displayed, just like in the introductory quiz. First of all, we would like you to get a sense of how important it is that "image data can be properly displayed" by checking the display of the LCD that you currently use, (that"s right, the one you are using to view this page!).

The test items use color / monochrome patterned images to check gradation expression, and simple images to check brightness / chromaticity variation. Downloads are available of several test images, such as gradation patterns. We would like you to display the downloaded test images in photo retouching software or a viewer that can reproduce color accurately. As we mentioned at the start of this article, you have to be careful as in many cases colors cannot be displayed accurately in web browsers. (Currently only a few browsers such as Safari and Firefox 3.x can handle color management).

Before starting your visual check of the display quality, please return to your LCD"s setting to default, and select Adobe RGB or sRGB as the image quality mode. If these modes are not available it is fine to set the color temperature to 6500K and gamma to 2.2. If you cannot adjust the color temperature and gamma, simply adjust the brightness and contrast so that they are easier to discern. Of course, if it"s an LCD environment that has been color calibrated it"s OK to leave it as it is.

The average LCD takes some time for the monitor to stabilize after it is switched on so, after start up, please wait at least 30 minutes or so before doing the test. (Most EIZO monitors are an exception to this as they are equipped with our proprietary dimming function and the monitor stabilizes in a short time after start up.)

We would also like you to adjust the monitor stand so that things like the room"s lighting are not reflected on the screen. You have to be particularly careful with products that have a glare (glossy) type screen as they are highly reflective. Visual assessment is impeded when ambient light is reflected. It will be much easier to make an assessment if you turn off the room lights at night and exclude as much ambient light as possible. This applies for both glare and non-glare (matte) types.

The surface treatment of an LCD makes a difference to the background reflection. Glare panels impede the surface diffusion of backlight, which does make it easier to achieve high color purity, but also makes distinct reflections of the user or lighting much more likely (photo on the left).

If the lights are similarly trained on a non-glare panel they do not have much effect on the display, only appearing as a fuzzy brightness (photo on the right).

For your reference, we ran a test on an EIZO 24.1-inch wide-screen LCD, the FlexScan SX2462W, for this article. The FlexScan SX series comes with a number of high image quality functions and boasts top class display quality as a general-purpose LCD intended for a computer.

When we displayed the quiz images (the more difficult ones, of course) on the FlexScan SX2462W, the four letters appeared faintly when we stared closely at the screen and we could read what they said. This indicates the high image quality level.

When checking the display quality of an LCD it is comparatively easy to understand the gradation expression capability by a visual check. Let"s display color and monochrome gradation images and check whether the entire image is smoothly reproduced. If there is a problem with the gradation expression it produces things like blocked-up shadows in dark areas and blown-out highlights in light areas, banding (vertical or horizontal stripes) in the middle gradations, and color cast, so you should check for problems like these.

Test images of color / monochrome gradations are shown below. Each test image is prepared for three resolution levels (1280 × 800 dots / 1680 × 1050 dots / 1920 × 1200 dots). When you click on an image it is displayed in that actual resolution. We would like you to download the images in the resolution which matches that of your current LCD. Gradation expression can vary according to whether the image is viewed horizontally or vertically, so it will be more effective if you rotate these images and view them vertically as well.

A gradation pattern where the colors red, green, blue, cyan, magenta and yellow go through 16 gradients as they change to white or black. This is an easy test image so we expect that it can be seen in most environments that each color bar is divided into 16 blocks.

A gradation pattern where the colors red, green, blue, cyan, magenta and yellow go through 64 gradients as they change to white or black. Each color bar is divided into 64 rectangular blocks. With this many gradients we expect that many LCDs will find it hard to make distinctions in the dark areas or the areas that are close to primary colors.

A smooth gradation pattern where the colors red, green, blue, cyan, magenta and yellow go through 256 gradients as they change to white or black. At this level of difficulty you cannot distinguish between adjoining colors from a distance but, if you have an LCD with excellent gradation expression, if you look closely you should be able to see that each color is divided into thin rectangular blocks.

A gradation pattern that changes from black to white. It is divided into 5 horizontal bars: from the top, smooth, 128 gradients, 64 gradients, 32 gradients and 16 gradients. Even if all the differences can be distinguished in the 16 and 32 gradient patterns near the bottom, we expect that there will be some parts in the 64 and 128 gradient patterns where it is hard to see the boundaries between adjoining colors. With this kind of monochrome test image you should also check whether any unnecessary colors are mixed with the gray.

On an average LCD gradations of gray that are close to black tend to appear as blocked-up shadows (gradations of gray that are close to white are displayed comparatively accurately). If your LCD"s OSD menu allows you to adjust the contrast, please try gradually turning down the contrast. Turning down the contrast often makes it possible to see gradations that had been subject to blocked-up shadows or blown-out highlights.

Probably most LCDs will be able to detect some degree of banding and color cast in the middle gradations. Banding in the middle gradations is tone jump (Missing gradations) and, along with color cast, means that the RGB gamma curves are unequal. Unlike blocked-up shadows or blown-out highlights, this is an area that it is hard to improve with adjustments made by the user.

When there is a problem with the gradation expression, the original colors of the content being displayed cannot be reproduced. If you look carefully at displays like video, games or photographs you can probably see or sense things like a lack of depth in the coloration, unnatural color shifts in the middle gradations or displays blanked out with large blocked-up shadows. Of course, it is very hard to use such monitors for things where color reproduction such as photo retouching or graphics work.

When we looked at these test images on the FlexScan SX2462W, in the smooth gradation there was blocked-up shadows right next to the black but we could distinguish differences in gradations of gray until very close to the black area. When it comes to such subtle gradation distinctions the brightness of the room and the adaptability of the eye come into play, so the range that is visible will vary according to the environment and the individual. The gradation expression was excellent, with almost no blown-out highlights in light areas, middle gradation banding or color cast.

The FlexScan SX2462W has a 16-bit look-up table (around 278 trillion colors). It converts the 8-bit RGB input from the computer into multiple tones and then reallocates them in 8-bit RGB for their display. (10-bit display is also supported with the DisplayPort input)

This aligns RGB gamma curves for the entire gradation range from dark to light, making it possible to depict subtle gradations and thus eliminating banding and color cast in the middle gradations.

Smooth color and monochrome gradations displayed on the FlexScan SX2462W. This data is of screen displays photographed with a digital camera so some of the gradations may seem to have been destroyed, but they were cleanly represented when checked visually.

We have talked about ways to check gradation expression. We think that it was comparatively easy to understand about blocked-up shadows in dark areas, blown-out highlights in light areas and banding in middle gradations. However, it is hard to distinguish whether a gradation is being cast with unnecessary color so we would like to add a little more about this.

A row of images of slightly different grays (1050 × 300 dots). If you cannot see the boundaries between the grays there is probably a problem with the display environment or gradation expression of your monitor.

The answer is "The far right" (it is displayed if you drag the space between the brackets). If the other grays looked correct, color may not be being correctly recognized for a variety of reasons, such as the lighting environment or the LCD settings.

For example, when the room is lit with standard household incandescent lights white and gray look reddish, while fluorescent lights can make them greenish (which is why there is some lighting that is made to conform to color evaluations). What is more, white and gray can have a reddish tinge when the monitor has been set to a low color temperature, while a high setting can give them a bluish tinge. Thus it often happens that the gray in visual data does not look like a true gray.

Another big problem is that the human eye (brain) is easily influenced by surrounding colors. Everyone has probably experienced the phenomenon where, when you come from outdoors into a room lit with incandescent lights, the room seems to be bathed in a reddish light at first but, as your eyes gradually get used to it, you lose all awareness of the redness.

The two image patterns below are easy to understand examples of optical illusions. When you look at them you should be able to understand how heavily the human eye is influenced by surrounding colors.

The gray in the center of each square is in fact exactly the same color in each case (600 × 200 dots). However, the grays with a dark surrounding look light and the ones with a light surrounding look dark, don"t they? This is known as "brightness contrast"

The orange in the center of each square is in fact exactly the same color in each case (600 × 200 dots). However, when the surrounding saturation is high (red) the orange seems to have a low saturation, but when the surrounding color has a low saturation (green) the orange seems to have a high saturation, doesn"t it? This is known as "chroma contrast"

The human eye has adaptability that it is applicable to a variety of environments, so it is extremely difficult to accurately distinguish color by a visual check, even for color professionals. Big shifts in color can probably be seen but it cannot be helped if very slight color casts go unnoticed.

The important thing in actual use is that you should not adjust the image quality of your monitor or edit visual material while looking at colors that are being wrongly recognized like this. There are some products where the RGB values of the monitor can be adjusted individually, but this requires caution since fiddling around randomly often leads to irreparable loss of color balance. An effective way to make subtle adjustments to the color detail of image data is to display neutral gray or white image data and use that as a yardstick.

Now let"s assess the gradation expression with some slightly different test images. Below are color patterns with a spread of pale colors in gradations close to the dark range and the light range. They are arranged so that a distinction cannot be made between adjoining colors on an LCD with insufficient gradation expression.

In this color pattern the colors gradually change from near-white pastels to gradations that are even closer to white. As the lightness of each color increases (the nearer it approaches to white), the more difficult it becomes to distinguish between adjoining colors.

A color pattern where the lightness and hue gradually change. As the lightness of each color decreases (the nearer it approaches to black), the more difficult it becomes to distinguish between adjoining colors.

We expect that you could roughly get the whole picture in the gradation patterns on the previous page, but in the patterns this time some parts that cannot be seen may have appeared in some cases. As we mentioned earlier, LCDs tend to display gradations close to black as a blocked-up shadows, and color patterns that are close to black are particularly hard to distinguish.

Since there are some parts that cannot be seen, the possibility arises subtle skin colors and tones cannot be accurately recognized when doing things like retouching photographs, though the misrecognition will vary according to the user"s eyesight. People who place importance on color reproduction should probably bear this in mind when they think about replacing their LCD or buying an extra one.

Incidentally, when we checked the FlexScan SX2462W with these tests we could distinguish everything in both the close to white and the close to black patterns. As well as no blown-out highlights or blocked-up shadows, we saw no unnatural color casts.

This shows the color patterns displayed on the FlexScan SX2462W. It was taken with a digital camera so some parts look a little patchy but they were accurately displayed when we did a visual check.

Along with gradation expression, it is easy to visually check brightness variation and chromaticity variation. Brightness variation scatters brightness around the screen and is easy to notice when you use full-screen display for things like drawing up documents or using spreadsheets. Chromaticity variation scatters color around the screen and is not as easily noticed as brightness variation, but it makes graphics-related displays unnatural and causes deterioration in color reproducibility.

Every LCD has some degree of brightness and chromaticity variation, but there are many products where the variations become more obvious when the brightness is lowered. A comparison of the brightness and chromaticity variation of a number of LCDs reveals that there is a fairly large difference between products, so this is a point to bear in mind.

Brightness and chromaticity variation can be checked with standard Windows or Mac OS X functions. All you need to do is to set the desktop background to "Monochrome" and look at the whole screen from a little way away. Your check will be perfect if you change the desktop background to black, white, gray, then 100% red, green, blue, cyan, magenta and yellow, and then any "near-white pale color".

If you actually try this test you may be surprised to find more variation than you expected when gray or a near-white pale color is displayed. Generally speaking, the center of an LCD screen is the brightest and it gradually gets darker towards the edges. This is no problem if there is not a big difference in brightness between the central and peripheral areas, but there are some products where this difference is very striking.

An example of Windows 7 settings. Set the desktop background to "Monochrome" and then click on "Other". Prepare a color on the "Color settings" screen and use it as the background. (The background color cannot be changed in Windows 7 Starter.)

Incidentally, this test is also an effective way to test the LCD for dot defects (normal lighting / unlit room). We would like you to check the black display in a darkened environment, for example by switching off all the room lights at night. Although you probably saw the whole screen as uniformly black in a light environment, very often in a dark environment you can find variations in some parts due to light leaks.

The FlexScan SX2462W got good results again when we tried it with the brightness and chromaticity variation tests. The brightness decreased slightly at the edges of the screen, particularly the lower edge, but overall the display was even and pleasing. It is installed with a "digital uniformity equalizer" that measures brightness and chromaticity throughout the screen and makes corrections so that the entire screen is uniform.

Monochrome full-screen displays on a FlexScan SX2462W. Only the screen display is shown. The bottom right is a near-white pale orange. There are not many LCDs that can display this kind of pale color as uniformly as this

However, the pitfall here is that it simply means that "the screen is visible". The thing is that the viewing angle specifications are permitted to use the term "visible" until the display contrast ratio drops to an extremely low 10:1 or 5:1 when the screen is viewed from an angle (the steeper the angle from which the LCD screen is viewed, the more the contrast generally declines). In other words, they do not take into account the display uniformity of the central and peripheral areas of the screen, or the level of chromatic change, when the screen is viewed from an angle.

The ideal viewing angles is that the brightness and chromaticity is very uniform and there is not much chromatic change, even when the screen is viewed from a slight angle. The viewing angles given in the specifications are not really very helpful, but you can judge the standard of the panel type that the LCD (liquid crystal panel) adopts. IPS liquid crystal panels have the least change in brightness or chromaticity when the screen is viewed from an angle, and they are followed by VA panels. An IPS or VA liquid crystal panel can be said to indicate the superior nature of the product itself, so this is often included in the catalog or specifications. It is probably a good idea to look through the catalogs of various products.

On the other hand, monitors installed with cost-effective TN liquid crystal panels are in fact the most numerous. However, the TN type lags far behind the IPS and VA types in terms of characteristic viewing angle changes in brightness and chromaticity. Simply viewing the screen from a slightly different angle makes the coloration change dramatically, and the screen looks completely different according to whether it is viewed vertically or horizontally. If the vertical and horizontal viewing angles in the specifications are different then it is a TN type. There are quite a few products with a 20-inch wide screen or larger where colors look different in the central and peripheral areas even when the screen is viewed straight on.

The display on an IPS panel. Even when viewed from this angle, the displayed content can of course be distinguished completely and the colors also show up really well

The display on a VA panel. Compared with the IPS panel the screen is a little whitish and the chromaticity has slipped, but it is a satisfactory viewing angle for actual use

The display on a TN panel. There is a very clear difference from the IPS and VA panels. The display throughout the entire screen lacks uniformity and there is a yellow cast

The gradation images and monochrome images from earlier in this article can be used as they are to check the viewing angles. Display an image on the whole screen, look at it straight on and check whether the brightness and colors are uniform at the top and bottom of the screen, and in the center and at both sides. Then gradually shift the angle from which you view the screen and check how the brightness and coloration change. If you do this with photographic data as well as the test images, you should be able to get a better sense of the difference in the display.

When we checked the viewing angles of the FlexScan SX2462W there was absolutely nothing to criticize since, in addition to the use of an IPS panel, it is equipped with many high image quality functions, including the afore-mentioned digital uniformity correction circuit. The brightness and chromaticity throughout the whole screen is very uniform, and the coloration hardly changed at all when the viewing angle was changed.

Naturally, this is very impressive when doing things like photo retouching, but it is also very pleasant at times like when many people are looking at videos or photographs. You can get a perfect understanding of the viewing angles by a visual check of the display so, if possible, we would like you to check this in the store. You will probably be particularly amazed by the difference between IPS / VA types and TN ones.

We explained here about easy ways to check LCD monitor quality. How were the results for your current LCD? We think that many people were probably very bothered by the blocked-up shadows and blown-out highlights when the test images to check gradation were displayed, by the middle gradation banding, and by the variations in brightness and chromaticity when the monochrome images were displayed.

As we mentioned at the beginning, recently the number of LCDs with excellent display quality is on the decline. Although we would not go so far as to say that the display quality of inexpensive products is poor. Of course a high quality LCD is indispensable if you want to enjoy using your computer, properly handle the needs of applications that require color reproducibility, and to fully enjoy all the benefits of rich content.

The EIZO FlexScan LCD series has excellent display quality in those regards, and we have no qualms about recommending them to everyone. The product line-up is diverse but each model is clearly ranked according to the purpose to which it is suited and its screen size, and they all guarantee above-standard display quality. They may cost a little more than you had budgeted for but the clear value they offer exceeds their price.

If, after trying these tests, you have doubts about the display quality of the LCD that you usually use, we would certainly urge you to consider an EIZO LCD. We would also recommend that you construct a multi-display environment by making the new LCD your main monitor and the one that you have been using your sub monitor.

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Please note: This S300 device updated to latest S800 testbox which more powerful and price close, so S300 will stop selling soon, so if you want to buy S300 testbox we advice to buy S800 device from our website.

This is a 6in1 S300 test box that supports screens for iPhone Samsung Huawei Oppo Vivo and Xiaomi. Update to 2022-12-31, it has 271flex cables that support 567different models.

System version after 2022-11-07 there is an important update that system file for Oppo Vivo and Xiaomi will be put in USB disk to save storage to have more useful functions for S300 device. To be short, after updating this version, the device includes system files for iPhone Samsung Huawei only, if you want to test screens for Oppo vivo and xiaomi as well then you need to connect USB disk when testing these screens, if only need to test screens for iPhone Samsung Huawei then no need to connect USB disk.

It has an extra display on test box which you can see the screen voltage and currency itself, from this function you will be able to find whether screen get some problem

Market many people sell TFT LCD as OLED screens, as their currency is different so you will be able to find whether they are selling fake OLED while it is a TFT screen.

S300 can test touch panel only which means if the inner LCD broke you can switch to the “tp test only” model and test whether its touch panel is able to recycle. And still, as touch panel testing only model you can identify 8 Plus and below from Incell structure to other qualities.

If you bought an S300 box before, you can update the system to support all these models for iPhone Huawei and Samsung Screens, just buying a flex cable set is fine.

At FoneFunShop Ltd. we have every confidence that you will be delighted with your purchase. However, in the event that you wish to return any goods purchased, then please follow the applicable policy detailed below.

You can return unwanted items within 14 calendar days of delivery and we will refund you the price paid for the items. In addition to the refund on your items; if your return request is received within 14 days of delivery, and items received within the following 14 days, then we will refund the cheapest, standard delivery option to you, unless there is another item on your order. Outside of 14 days from receipt, refunds for non-faulty returned items will not include the original delivery charge or the cost of delivering the items to us.

If you return a product to us that is not received in a brand new condition we reserve the right to return the product to you, or issue a partial refund with a deduction because the item is not fit for resale. You should only handle the item as if you were in a high street store viewing the item as you normally would. it should not be opened or used.

Orders containing personalised items or to the buyers specification cannot be cancelled , this includes unlock codes and iPhone unlocks. whereby the buyers IMEI number is considered unique to the order and has no resale value.

Unlock codes and iPhone unlock services are based on the unique imei number of the customers phone, and are considered as a "made to a consumers specification" order.

These orders cannot be cancelled as they have no resale value. For example, an unlock code for john"s phone would not work on jane"s phone, because the 2 phones have different imei numbers. the code would simply fail on all other phones except johns. We have to order and pay for these codes from our suppliers for the customer once they place their orders online and supply their unique imei number, the codes are no good for anyone else so they cannot be resold to a different customer.

If your goods are faulty on arrival, you have 30 calendar days from receipt, in which to inform us of the fault in order to claim a full refund or exchange or repair exchange, (please note that for our business customers, different terms of sale apply), after 30 days your return will be processed under the terms of the Manufacturers’ Warranty (See below).

Goods should be returned in their original packaging complete with all accessories and documentation. Once we have verified the fault, we will conduct a repair, or issue a replacement, or full refund to you via your original payment method. We test returned items, and if our technicians find a returned item is not faulty or has been tampered with, we will return the item to you ( In certain circumstances, faults will need to be diagnosed by the manufacturers of the item before a replacement can be issued – i.e. memory card reading faults, item not powering up etc.). In this instance you will be liable for the return carriage.

Unlocking box"s and Dongles that are registered by the buyer and becomes faulty we will offer to replace or repair it depending on the warranty length of the product.

Unfortunately we cannot refund any unlocking box or dongle that has been used to unlock phone, we contact the manufacturer of the tool returned to check this prior to refunding or cancelling. However if faulty we can offer to replace or repair it depending on the warranty length of the product.

Orders containing personalised items or to the buyers specification cannot be cancelled , this includes unlock codes and iPhone unlocks. whereby the buyers IMEI number is considered unique to the order and has no resale value.

Unlock codes and iPhone unlock services are based on the unique imei number of the customers phone, and are considered as a "made to a consumers specification" order.

These orders cannot be cancelled as they have no resale value. For example, an unlock code for john"s phone would not work on jane"s phone, because the 2 phones have different imei numbers. the code would simply fail on all other phones except johns. We have to order and pay for these codes from our suppliers for the customer once they place their orders online and supply their unique imei number, the codes are no good for anyone else so they cannot be resold to a different customer.

Where applicable, replacement or alternative items will be processed as promptly as possible, but please be aware that it may take up to 10 working days to issue the item. If an item is out of stock, it will then become a priority back order to be shipped once stock is available.

If you are eligible for a refund, we will refund you back to the payment method you used when you originally paid for your order. Please note: It is your responsibility to notify us of any changes to your card details i.e. you no longer have that account. Refunds can take up to 30 days to process. Refunds by credit card are made to the same credit card that was used for the original purchase*. Refunds by Paypal will be refunded back to the original Paypal payment account.*

Where a product develops a fault outside its manufacture warranty timescale, we will try to help by offering a chargeable repair if possible, or if not possible you would need to purchase the replacement item at the current value.

To use this tool, you need to know screen voltage ,the resolution of the LCD/LED screen and the bit number of the LVDS cable for the panel, then check them against the list of screen parameter on the panel to find the right parameter and input it with the "+" key and "-" key on the panel digital tude.

To use this tool, you need to know screen voltage ,the resolution of the LCD/LED screen and the bit number of the LVDS cable for the panel, then check them against the list of screen parameter on the panel to find the right parameter and input it with the ”+” key and ”-” key on the panel digital tude.

To learn more about best practices on handling and using a Dell laptop, see the Dell knowledge base article Best Practices for Product Use and Handling for Dell Laptops.

WARNING: Use of controls, adjustments, or procedures other than what is specified in the User Manual may result in exposure to shock, electrical hazards, and/or mechanical hazards.

To learn more about safety instructions, see the Dell knowledge base article Safety Precautions When Working with Electronic and Electrical Equipment.

If the screen abnormality is not present in the built-in self-test mode, see the Dell knowledge base article How to Troubleshoot Display or Video Issues on a Dell Monitor.

If the LCD built-in self-test (BIST) diagnostic test passed, the laptop LCD screen is working correctly. The display problem could be due to an outdated graphics driver or incorrect video settings. Follow the troubleshooting instructions in the Dell knowledge base article How to Troubleshoot Display or Video Issues on a Dell Laptop.