After replacing the power supply, the monitor does not turn on. Incorrect resolution settings. Problems in the software and ways to solve them

Sooner or later, all users encounter hardware problems. personal computer. The hardware of the “iron genius” sometimes malfunctions. The reasons for this can be very different. They begin with the simplest and safest thing - driver failure.

A driver is a program that is responsible for correct operation equipment. But driver failure is nonsense. The situation is much more serious if the reason for incorrect operation lies in the equipment itself. Simply put, if the device is broken. You'll be lucky if there's a guarantee. But if not...

But we will not delve into this jungle, but will simply try to figure out the main problems due to which the monitor may not display an image, and also solve these problems. So, what to do if the monitor does not turn on when you turn on the computer?

Preparation and diagnostics

Before you can fix anything, you need to understand the nature of the problem. If the monitor does not turn on when you turn on the computer, you first need to diagnose why this is happening. Let's think logically. If the monitor does not turn on when you turn on the computer, then it is not receiving a signal. And this is easy to check: for all modern screens There is an indicator showing the presence/absence of a signal. Looking at it, you can already draw the first conclusion.

If the signal is received, the indicator blinks, but the image is still not displayed on the screen (that is, it remains dark), the problem most likely lies in the video card. And another case when the monitor does not turn on when you turn on the computer may be associated with the “genius” himself. This is easy to determine. If the system does not boot, if it is impossible to even enter the BIOS, then the problem is clearly in the computer, not the monitor.

Reason #1: The monitor is not receiving power

To solve this problem, first check whether the screen power is valid from electrical network. If the problems are not related to the power supply, but to the drivers, then the monitor does not turn on and the light blinks. Let's say that there is power from the network, but the monitor is still turned off. Then you can try connecting it using another wire, if available. This problem is exactly the case when the monitor turns on, but there is no image on it.

Reason #2: The connecting cable is not connected correctly

Users sometimes wonder why the monitor does not turn on, without even suspecting that the problem lies in ordinary neglect, ordinary carelessness and carelessness. In this case, you need to carefully check how securely the connection cable is attached to the adapter or network, as well as to the power supply. The cable may be damaged and the signal may be interrupted.

If your computer has two video cards installed - discrete and integrated - then you need to connect the cable coming from the monitor to the discrete one. In personal computers, the discrete card connector is usually lower than that of the integrated card. If your monitor turns on and off, this could also be an indication of a bad connection. Sometimes the signal can be interrupted simply by touching or moving the cable.

It is worth checking how securely the cable was connected to the connector. You can take it out and put it back in. Moreover, this procedure should be done in both directions: both from the side of the power supply and from the side of the VGA adapter of the monitor. There are special twists there. If one of them is untwisted, the connection may be interrupted. What can I say when both are poorly secured. In this case, you should not be surprised that the monitor does not turn on, there is no signal.

Perhaps the very last step that can get rid of this problem is to replace the cable. However, if the signal is received stably, the indicator is constantly on, without turning off, it is not advisable to buy a new cable. Most likely, in this case, the cause of the emergency is incorrectly installed software. Or incorrect debugging of the device. Actually, next we will look at the solution to these problems.

Reason #3: Incorrect settings

A glitch that appears in the picture settings can also cause the monitor to beep and not turn on. In the settings, as you know, you can edit the monitor resolution, its frequency and other parameters. If they were set incorrectly, the monitor simply will not display the image on the screen. You can check whether this is the case quite simply. If you have a second personal computer or laptop (and in most cases in families there are two or more similar devices) in working condition, then we connect the monitor with a suspected breakdown to this very device. If it displays an image on the screen, then the problem is clearly in the settings.

It is quite possible that there is a conflict between two video cards if they are installed in a PC, as well as in a laptop. To solve this, you can go to the BIOS and find there the item responsible for the operation of the integrated video card. There we disable it, since it is much weaker and the entire load still goes to the discrete video card.

A card conflict is often why the monitor does not turn on at startup. This is especially evident in the case of laptops. The fact is that in the case of a PC, the monitor is directly connected to the card using a VGA adapter. But in laptops the principle is a little different. There are also reasons related to incorrect work drivers, but more on that later.

Reason #4: Incorrect software

As you know, many modern video cards require special software. It usually comes on a disk that comes with the video card. Laptops come with disks containing drivers for all devices. If the indicator light on the monitor is on, but there is no image on the screen, then the problem most likely lies in the incorrect operation of the drivers or their incorrect installation. In this case, incorrect operation of the screen may be due to an update to the driver version.

After the update, the operation of the video card is disrupted, and the output of the image on the screen depends directly on it. Solving a problem of this kind is not so difficult. You just need to log into the system using safe mode (usually you can open safe mode using the F8 or Del button) and delete old version software. If possible, perform a system restore. Next, you can review the version and determine if it matches your device.

Reason #5: the video card is not working correctly

It often happens that when cleaning system unit On a personal computer, users touch the slot with the video card. Or they simply pull it out and then insert it back, but do not fix it firmly in the socket. Getting your video card back to work is easy: check that it is securely fastened. If there are no problems with this, take it out and return it back. After this, if the card is technically correct, everything should work again. Do not forget about the safety rules: such operations can only be done with the system unit turned off from the network to avoid electric shock.

Perhaps nothing will change, the monitor will remain dark. In this case, the video card itself probably broke down. By connecting it to another computer, you can determine whether this is actually the case. If it does not work with another computer (if correct connection, of course), then the problem is clearly in the board. Some users find that rearranging video cards is a long process. And you don’t always have a second device at hand. If this situation arises, and your PC or laptop has an integrated, unused video card, activate it.

If the screen works, then the problem is discrete. Do not forget that you can activate the integrated video card in your PC only after disabling the discrete one. In case of breakdown discrete card No programs will help, you will have to change the model. This is probably the worst thing that can happen. Along with a broken monitor, of course, which will be discussed further.

Reason No. 6: the monitor is not working correctly

Check your display settings. As you know, monitors have several connection types. Now the most common of them is VGA. There are also DVI and HDMI. Again, make sure that the cable connecting the video card connector and the monitor connector is securely connected at different ends. If there are twists on the cable, make sure they are turned all the way. You can also look at other display settings, maybe something is incorrectly set there. Or even some option is disabled. Very often, having accidentally set the wrong settings, we ask why the monitor does not turn on. And the answer at this time lies on the surface.

If nothing suspicious was found in the settings, the cable is connected correctly and securely, but the indicator does not blink and the monitor does not reproduce an image, then we can say that the monitor is broken. This outcome is 95 percent. The remaining 5 are allocated only for cable failure, due to which the power supply to the display may be interrupted.

Reason No. 7: incorrect operation of the operating system

Let's assume that the BIOS loads without any problems and sounds (greetings) are played. But immediately after the logo appears, when, in theory, there should be a login, the image disappears. This means that the problems are not with the technical and hardware parts, but with the operating system. Perhaps the incorrect operation lies in the system files. Or maybe there is another mistake here. For example, third party programs can change the operational visual style. Then a conflict will occur, the result of which we are seeing. Of course, we should not forget about viruses, which simply do not allow drivers and the operating system to work at full capacity. The operation of not only programs, but also devices may even be disrupted.

One solution if this problem cannot be solved is to reinstall the OS. But, you see, many users store quite valuable data on their PCs that they don’t want to lose. Let's be honest: few people do backups files. That is why you need to look for workarounds that will allow you to deal with the incorrect operation of the screen without reinstalling operating system.

Conclusion

So, what did we find out during the article? The problem when the monitor displays a picture can be caused by:

broken monitor;
broken video card;
broken cable;
incorrectly connected hardware;
incorrect software.

What solutions are suitable for each type of this problem?

First you should check whether the cable is connected correctly. Inspect both ends. Perhaps one of them is not fully inserted into the connector or is not securely fixed there with screws.
The cable may be damaged. You can check it by connecting it to another working monitor. If it is still faulty (as is the case with a monitor or video card), it will need to be replaced with a working one.
Check how stable the software is. An incorrectly installed driver may be to blame. This may be a driver for a different laptop or PC model, as well as for a different device model (video card, for example). You can verify that the software is not working correctly by loading into safe mode. There you can also remove the old version of the driver and then install a new one that works.

Instead of a conclusion

What to do if the monitor does not turn on? The light and indicator are blinking, but there is no image? This is the case when the problem lies in the incorrect operation of the software. If the computer turns on and the monitor blinks, you should start in safe mode and go through the drivers.

So, we have examined all the problems that may relate to the malfunction of the monitor and video card of a personal computer and laptop. The article also answered the question of what to do if the monitor turns on, but there is no image.

Users do not have to wonder why the monitor does not turn on very often. But, if the problem has already arisen, it can be quite difficult to cope with it.

And in such a situation, when the computer is left without the main means of displaying information, you should take as many steps as possible to restore it.

And this can be helped by studying the signs accompanying a device that does not turn on - a blinking light, a system reboot, and even the behavior of the computer itself.

The check will help you find out exactly what problem has occurred and help you fix it yourself or by contacting service.

Hardware faults

Despite the fact that it seems to the user that it is the monitor that is not working, and everything is in order with the system unit, most often the problem is in the computer.

In this case, even after submitting the device for repair, you can receive an answer that it works quite normally.

And buying a new monitor will generally lead to a waste of money.

So, the main reasons why nothing is displayed on the display after pressing the power button could be:

Problems with the video card, which is used to connect the system unit and the monitor;
Incorrect operation motherboard.
And finally, another hardware problem is actually a broken monitor.

In each of these cases, determining the cause of the malfunction when starting the computer is quite difficult - especially for not very experienced user, not faced with similar situations.

And yet, there are several techniques that can help not only check what the problem is, but also the degree of its complexity.

As a result, you can determine what will be needed to resolve the issue - is it worth trying to do it on your own or can you not do without a service.

Computer problems

A fairly common reason for the lack of an image on the monitor is the computer not turning on for some reason.

This happens, for example, when the power supply of the system unit fails or its power is not enough to support the operation of all systems connected to it (including the video card).

It is worth noting that modern gaming graphics cards have power consumption of 150–180 Watts, and AMD processors– up to 70 W.

And, trying to start a PC with a 300-watt power supply (taking into account the need for energy consumption from the motherboard, hard drive and optical drive), the user overloads the system and the computer does not turn on.

Although the same power supply is perfect for a nettop with a regular built-in video card.

A problem with the main power supply is detected by a message that lights up on the monitor before it turns on, and it disappears after just a couple of seconds.

It can be solved by replacing this element - enough simple procedure, which requires a few minutes and a new power supply.

If the PC still works, but when you turn on the computer the built-in speaker produces a signal in the form of a squeak, the memory is faulty.

Advice! After cleaning the contacts or, in rare cases, replacing the RAM sticks (for such a radical solution, it is worth conducting additional tests), the problem usually goes away.

Find out what exactly is wrong motherboard, you can do it in the same way as with a faulty power supply - the computer simply does not turn on, and the indicator on the monitor continues to light.

Although to clarify the reasons, you will most likely have to contact the service. But it is not the monitor that should be given there, but the system unit.

Additionally, you can make sure that the fault for the lack of a signal from the monitor lies with the computer, and not with the device itself that does not turn on, by connecting the monitor to a laptop, second computer, or video player.

This test option is ideal in case of a faulty system unit or an incorrectly configured system.

Since both the player and another PC will work with it normally, but the problem will have to be solved with the computer itself.

Video card

If the user has recently taken apart the computer and made some moves of modules on the motherboard, it is possible that the problem with the monitor is actually the graphics card.

A video card that is moved when cleaning the computer from dust may not work and the monitor, accordingly, will not turn on.

To check the board, you will have to disassemble the system unit back.

The absence of a result does not necessarily mean that the video card is not related to the problem.

Additionally, you can check it by switching the connecting cable from the monitor to the connector of the second graphics card - modern PCs, especially gaming ones, have two of them - built-in and discrete.

A normally working display indicates the need to change the video card or temporarily use a second one.

If you have two video cards, the problem occurs when the drivers for these devices conflict. Disabling the built-in graphics card in the BIOS will help eliminate it.

Monitor

When the button blinks but the monitor does not work, you can assume that the problem is in the computer. If the indicator does not light up at all, the problem is in the display.

In extreme cases, even the matrix may be broken. But most often the problem is nutrition.

You can find out if the cause of the breakdown is a problem with the cord after checking its connection to the power supply. It is recommended to check the operation of the monitor with a different cable.

If the lamp still does not light up, the power supply is faulty and should be replaced.

Another common reason, which is already characterized by a burning light, is the lack of communication between the monitor and the computer.

In this case, the processor is working normally (there are no signals, the power supply fan is running), and the indicator indicates that power is supplied to the display, but there is still no image.

The connecting cable should be switched to another video card and returned again.

Software problems

If the problem is not with the hardware, but on the computer, it is much easier to fix it. You don’t have to contact either a service or a warranty workshop.

All that is required from the user is to reconfigure the system or update the drivers.

Monitor settings

The reason why the display does not work may be due to incorrect image settings. For example, it's wrong set frequency or screen resolution.

You can determine the problem by trying to connect the monitor to another computer, and get rid of it by resetting the settings after logging into safe mode, which may require another display.

Drivers

Wrong installed drivers also lead to the absence of an image.

Although the monitor will turn on for a while and show at least the operating system boot screen.

They deal with the problem by switching to safe mode and updating the drivers.

operating system

Display BIOS boot when you turn on the computer, and further disappearance of the image may be caused by serious problems with the operating system.

This situation is caused by viruses that get onto the PC from the Internet or from removable computers. information media, and other operational problems system files.

If safe mode or restoring the system to a previous working state does not help, the OS is reinstalled.

This will take no more than 20–30 minutes, and the monitor’s performance will be restored automatically.

Although to get some extensions you will still have to install new drivers.

Start loading BIOS

At long work With a computer you have to deal with issues related to its incorrect operation. A common problem that occurs among new and experienced users: the monitor does not turn on when the computer starts. The reasons for this, in 90% of cases, are not related to a broken monitor. But, let's look at everything in order.

Reasons

When, when you start the computer, the screen does not turn on, the power button continues to light (the indicator continues to blink in standby mode, as if the computer is turned off), or No Signal appears on the screen, check the connections of all cables.

If this does not help, the following may be the cause of the display not working:

The computer's power supply has failed.
The contacts of the strips are clogged RAM.
Hardware failure of the discrete video card or its contacts are clogged.
The computer motherboard has failed.
Monitor failure.

Important! Troubleshooting in this matter seems to be a difficult task, since when you turn on the computer, it “comes to life” and works, or creates an imitation of work (coolers spin, indications turn on on the CD/DVD drive and on the system unit). Attention to detail will tell you the cause of the breakdown.

Troubleshooting

Before disassembling the system unit or monitor, perform diagnostics to find out where the fault is located:

Turn on your computer. Can you hear beep(short squeak) that sounded earlier when working properly? If not, the problem is in the PC. If yes, let's keep an eye on the download.
When starting the operating system (for example Windows), did the welcome music play? Is he playing now? If not, the problem is in the PC. If yes, we carry out further diagnostics.
If there is no more equipment in the house (computer, laptop, netbook) to which you can connect and test the monitor, on the back of the computer there are 2 connectors for turning it on: to discrete video card(connected now) and to the integrated one.

Reconnect the monitor, reboot. Is your monitor working? Yes - there is a problem with the video card configuration or its contacts: try removing the board and cleaning the contacts with a regular eraser. It didn’t help, the video card needs to be repaired. No - let's move on.

If possible and you are friends with your neighbors, connect your monitor to their computer (or their monitor to yours).
If it turns out that the monitor is working, but does not work with your system unit (there is a short sound at the beginning of the boot, there is a melody for loading the OS), remove the RAM strips, wipe the contacts with an eraser, and put them back.
If the actions described in paragraph 1 or 2 are not performed, try cleaning all contacts and checking whether the boards and cables are securely seated (for example hard connection disk with motherboard).

After diagnostics and troubleshooting (if there are no hardware failures), your monitor will work again as before. If the problem is in the PC and the above does not help, it is likely that the problem is in the hardware (the power supply / video card or motherboard is faulty). Contact a PC repair technician.

Quite often, users are faced with a situation where the monitor does not turn on. If the monitor displays a black screen or the message “No Signal” appears, and glowing indicators, the backlight of the power button and the noise of the running fans of the system unit indicate that the computer’s operating system is loading. The topic is quite relevant, and like many others computer problems does not have a clear and simple answer. After all, in addition to the monitor, other components of the system unit are also responsible for displaying the image on the screen. A breakdown of one of them results in a black screen on the monitor, and the user may think that it is the problem. Let's look at the main reasons why the monitor does not turn on when the system unit is running and what to do to solve the problem.

First, you should check the monitor's connection to the electrical network. It is possible that while cleaning and rearranging the system unit, you caught the cable, so check the tightness of its connection to the electrical input of the monitor and the socket. Immediately make sure that the power outlet has 220V voltage by connecting any electrical appliance that comes to hand.

If you are using an extension cord, you should make sure that the outlet into which the monitor is plugged into is working properly. There are times when some extension cord sockets fail. Connect the monitor to a known working one and see if the backlight of its power button is lit.

When you connect other electrical appliances to the same extension cord along with the monitor, due to the heavy load, the monitor may not receive the required share of the voltage necessary to start it. To make sure of this, turn off all electrical appliances and see if this is the reason.

Next, check the electrical cable, there may be a break in it. To do this, take another one and check if the light is on and if the monitor turns on. If the power button is lit but the monitor does not turn on, there is most likely a problem with the components of the system unit. If the light does not light and the monitor does not turn on, the problem is in the monitor's power supply.

In most cases, the reasons lie in worn out (dried up) capacitors. If you know a little about repairs, you can find out on the Internet the markings of the installed capacitors and their analogues, and resolder them yourself. But still, in this case, it is better to contact the service center.

Checking the video cable connection

First, we check the tightness of the cable connection in the connectors of the monitor and the system unit. Be sure to check the pins in the cable connectors for bending. Sometimes, when the cable is pulled sharply from the side, these contacts bend. When connecting later, the user may apply excessive force and bend the pins. Therefore, be sure to check them when connecting.

Next, check the cable for kinks. To eliminate this possibility, connect another similar cable, thereby finding out whether it is to blame for the monitor not working. Problems with broken or shorted wires in the cable manifest themselves long before it fails - the monitor begins to glow in one color (green, blue or red) when turned on, and the background changes when you bend the cable in one found place. In this case, the cable must be urgently replaced, otherwise it may lead to breakdown of such an expensive component as a video card.

If you have two video cards installed in your system unit (integrated and discrete), check whether you connected the cable to the right connector. When you buy a ready-made computer with a discrete video card installed on it, the integrated one is disabled in the BIOS settings; if it is connected to this connector by mistake, the monitor will not turn on.

Incorrect resolution settings

It happens that when installing a program, its window extends beyond the screen in width. Therefore, for comfortable work with the program, the user includes more high resolutions, which are not supported by the monitor. In this case, when you start the computer, the monitor will turn on, the BIOS logo will appear on the screen, the RAM will be tested and hard drives, but the operating system will not load, a black screen will appear.

To solve this problem, launch safe mode by holding F8 and return the video card resolution settings to the original ones. If you are not satisfied with them and want to increase the screen resolution, check the instructions for your monitor to see which ones it supports.

RAM problems

There are situations when when you turn on the computer, its indication lights up, but the screen does not turn on. At the same time, the system unit beeps. Many people may think that the problem is with the monitor.

When the system unit beeps, this indicates that there is a malfunction in one of its components. The monitor has nothing to do with this. By the number of beeps and their duration, you can accurately determine which PC component has failed.

You may be misled by the fact that when the RAM strips fail, the power button on the system unit lights up, but the monitor does not turn on. Most likely, when cleaning the computer, the RAM strip was touched. If so, seat it tightly in place, otherwise replace it and everything should work without problems.

Problems with the video card

If you have verified that your monitor is working properly by connecting it to another computer, then the next link that is responsible for displaying the image on the screen is the video card.

Important. To make your video card last longer, you need to monitor temperature conditions graphics processor. Overheating and dust can significantly shorten its service life.

First, we check the density of its contact with the slot. If the problem is not resolved, plug the monitor into the integrated video card connector (if equipped). IN modern monitors There are two outputs (VGA and DVI), so if your display was connected to a discrete video card using a DVI cable, and the back of the computer only has a VGA input, look in the monitor box for a VGA cable, it should be included. Next, go to the BIOS, holding down the Delete or F2 keys when turning on the computer, and in the settings enable support for the integrated card.

If the monitor works when plugged into another connector, the problem is with the discrete video card and should be replaced. It should be remembered that when disconnecting the cable from the system unit, be sure to disconnect the monitor from the network. Otherwise, there is a high probability of failure GPU video cards.

If there is no second video input, you can check the video card on another computer.

Incompatible video card driver

When reinstalling the operating system, many users are faced with missing video card drivers. The CD that came with the video card is lost or unreadable. Or was reformatted logical drive at Windows installation, on which the drivers were stored.

In the standard set of drivers Windows user tries to find a compatible driver. But when the driver is selected incorrectly, at startup, but only before the operating system loads, after which a black screen appears.

To solve this problem, you need to go into safe mode and return standard driver video cards. After successfully starting the computer, go to the official website of the manufacturer of your video card and download the necessary drivers.

Failure to load the operating system

Another reason why the monitor does not turn on is a failure in the boot area of the operating system. After the computer starts, the BIOS displays testing information and the monitor turns off before loading the operating system.

This situation occurs due to virus infection or damage to system files in boot areas hard drive. To solve the problem, it is necessary boot disk or flash drive with installed antivirus scanner eg DR Web LiveDisk. If infected, perform a full virus scan. Then boot your computer in safe mode and use a restore point to roll back to an earlier state.

If no viruses are found during the scan, most likely bad sectors have appeared in the system files area of your hard drive. Scanning and treatment needed bad sectors by using Victoria programs or MHDD.

In the end

We have listed the most common reasons why the monitor refuses to turn on. Each specific situation requires a more thorough approach. However, many problems with turning on the monitor can be resolved independently at home.

In most cases, the reason that the monitor does not turn on or there are problems with the image is the incorrect operation of the video card, incorrect settings, or an incorrect connection.

The simplest check:

Disconnect all wires from the monitor
Connect only the power cable
The monitor should turn on. “No Signal” appears on the screen
After some time, the monitor switches to energy saving mode - “Stand by” (the power indicator changes color, the picture disappears)

In this case, the monitor is most likely working properly. Of course, there are possible exceptions.

You can also check the health of the monitor by connecting it to another computer.

If the monitor has proven to be inoperable, you should contact the service for diagnostics and repair. Our article will tell you what to pay attention to when describing the problem, so that when telephone conversation You were correctly advised on the price and timing of repairs.

Before calling the repair shop, find out the exact model name of your monitor. A number of models have standard faults that have long been known to service center employees.

The monitor does not turn on, the power indicator does not light up

If the monitor shows no signs of life, there is likely a power problem. Most often, this breakdown is easily fixed.

There may be a problem with the monitor's power cable or connectors. In this case, if you change the position of the power cord, the indicator may light up briefly when contact is made. If it is completely inoperable, the power supply will most likely need to be repaired.

Power indicator blinks, no picture

Flashing of the voltage indicator (cyclic power on/off) regardless of the position of the cord is a signal of incorrect operation of the power supply or main board.

The service center will determine the cause of the problem and fix it.

Power indicator is on - no image, backlight is on

Most likely the problem is in the operation of the processor board (MB) of the monitor. For diagnostics, you will have to contact a service center, since such “symptoms” do not allow you to immediately determine the cause of the malfunction. The technician will be able to give an exact answer only after examining the monitor in disassembled form.

The monitor backlight does not light up or goes out after a few minutes of operation

Sometimes the picture can be seen in reflected light, when looking at the monitor from above, from the side. The monitor responds to buttons and there is access to the menu. It is possible that immediately after turning on the monitor works, and after a few minutes the backlight turns off. The problem is in the inverter or in the backlight lamps: they burn out over time or can suddenly fail as a result of mechanical stress (for example, an impact). Repair consists of replacing the lamps or converter. For this procedure, you should choose a service meticulously: the procedure is complex, requiring a certain level of qualifications and increased accuracy from the specialist.

Screen brightness decreases and a reddish tint appears

These symptoms indicate burnout of the backlight lamps, as in the previous case. Decreased brightness and a reddish tint may occur only in a specific area of the screen or throughout the entire monitor. The problem is solved by replacing the lamps, and various dark screensavers and monitor sleep mode settings serve as preventative measures. The fewer nights the monitor sits with a static picture on, the longer the lamps will last.

Stripes on the screen

The appearance of vertical or horizontal stripes on the monitor screen is a sign of a malfunction of the decoder cables. If the stripes change location, then the problem may be in the video card, and if the stripes have a constant location and color (black, white, color), then the problem is in the monitor matrix. For replacing the master's cables in service centers are practically not undertaken, since there is no confidence in the success of the operation and that the problems will not return after short time. The only solution to the problem is to replace the matrix assembly. If your monitor is under warranty, contact service immediately after the stripes appear, even if there is only one stripe and it doesn’t bother you.

If stripes appear on the monitor, warranty period whose service life has already ended, find out at the service center the cost and estimated repair time for your model. An original matrix is required, and the cost can be comparable to buying a new monitor.

Image or color distortion

Usually occurs due to loss of contact in the signal cable or broken connectors. Check the signal cable(VGA,DVI) by replacement.

The DVI (digital) cable can only be switched (!!!) on a de-energized monitor!!!

If the defect persists, this is most often due to either incorrect operation of the video card or a breakdown of the monitor’s processor board. In some cases it can be fixed by flashing the firmware.

The technician will be able to name the exact cause of the malfunction and the cost of repair only after diagnosis.

The monitor does not display an image from the computer, it displays messages

If, instead of the usual picture, the monitor displays a service message (“check the cable” or “ non-optimal mode"), and this state does not change after appropriate changes (replacing the cable, setting the required mode), most likely the problem is in the monitor. A number of monitor models with a MICOM processor (Samsung 710 (N/V), 713/913 lines, some Philips, LG) have a standard malfunction associated with the rapid failure of the processor. Repairing or replacing the faulty processor completely eliminates the problem.

Problems with LED monitors

LED monitors differ in the type of backlighting: LEDs are used instead of lamps. Failure of LEDs, which manifests itself as a decrease in brightness in a separate area of the screen, is quite rare and can be successfully repaired.

Please note that slight unevenness in the backlight of the LED monitor may budget models already found upon purchase. In this case, the center of the screen is illuminated more than the edges. This is due to the use of cheap materials to create the scattering layers of the screen. Not ideal color reproduction is also a feature of LED monitors; they are simply not designed for professional work with color.

One of the common failures of LED monitors is screen flickering, which becomes noticeable when the brightness is reduced. For some models, repair is limited to flashing the firmware; for others, the processor board needs to be replaced.