Quite often, when using LCD monitors on desktop computers, you can encounter a problem that the image on the monitor has become blurry. Why did this happen, because up to a certain point everything was normal? To answer this question, you need to understand what is causing this phenomenon, and only then take appropriate troubleshooting actions. Let's try to identify the most common causes.
Why does the image appear blurry?
Speaking specifically about the reasons for this phenomenon, almost all experts identify several of the most common ones, among which the main ones include the following:
- damage to the VGA cable or loose contacts on the connectors;
- incorrect settings of the monitor itself;
- inconsistency between monitor parameters and operating system settings;
- problems with drivers.
Note: sometimes this list includes incorrect installation of Windows updates, which can most often be found for some reason in the seventh modification. This is due to the fact that some updates (and this is confirmed even by specialists from Microsoft) are simply unfinished, and they contain updates to various VGA drivers, which lead to unwanted effects.
In this case, as soon as you notice the appearance of a blurry image on the monitor, the latest installed updates must be removed manually, using at least the item viewing installed updates in the programs and components section, which is called up from the standard “Control Panel”.
A more effective way is to use specialized uninstaller programs like iObit Uninstaller. True, in both cases it will be necessary to re-set the search for updates manually and exclude from those found those that do not need to be reinstalled (as is already clear, updates are removed one by one with a reboot and check of the system). As a simpler solution, we can suggest the Show or Hide Updates utility, developed directly by Microsoft.
The simplest method for eliminating unwanted visual effects
But let’s assume that everything is in order with the updates or their installation is presumably disabled by the user himself. In most cases, it is believed that the appearance of a blurred image on the monitor can be caused by physical damage to the cable that connects the monitor to the stationary system unit. Try simply unplugging the plugs from the sockets and then connecting again. If this does not help, “ring” the cable or replace it with a new one. If possible, use an adapter to HDMI (the image will be stabilized immediately).
If everything is in order with the cable, try calling up the built-in menu of the monitor and try to adjust the clarity of the picture by changing the device’s own parameters, after reading the technical documentation.
How to get rid of a blurry image on the monitor in Windows 7 or another OS?
As for the system settings, you can check them quite simply. On the empty space of the “Desktop”, right-click and select Screen Settings. In the settings, first of all, pay attention to the set resolution.
Almost all monitors are set to the system recommended value. If it is changed for some reason, install the one you need. Outdated monitors can work absolutely correctly in only one mode, but some support several possible modes. Also check your screen refresh rate settings. To start, set the indicator to 60 Hz. However, if the device supports the use of a higher frequency, it is better to use it (it is believed that the higher this indicator, the better the picture).
How to remove a blurry image on the monitor in Windows 10?
When you call the above-described setting item from the “Desktop” in the tenth version of the system, you will be redirected to the corresponding section located in the options menu.
If the zoom option is enabled with a value of 125%, and the panel and window size options have been changed, set the recommended parameters.
Note: if your computer or laptop has an integrated video card rather than a discrete one, you can adjust the necessary parameters to eliminate a blurry image on the monitor using, for example, the built-in “Intel Graphics and Media Control Panel.” If there are special control programs for discrete graphics adapters, it is recommended to change the settings not only in the operating system, but also directly in such applications (at the same time, by the way, you can test the chip together with the monitor).
Driver update issues
Finally, outdated video card drivers can also lead to a blurry image on the monitor. It is completely impractical to update them using Windows. To achieve the optimal effect, use the search for the latest updates of management software like Driver Booster. In the case of discrete graphics adapters, it is better to use specialized applications from the chip manufacturer.
As a last resort, you can find the necessary drivers either on the manufacturer’s website, or search using special hardware identifiers VEN and DEV, which can be determined in the “Device Manager” (through the properties on the details tab), as shown in the image above.
Here are the TOP 10 most common malfunctions of LCD monitors that I have personally experienced. The rating of malfunctions was compiled according to the personal opinion of the author, based on his experience working in a service center. You can take this as a universal repair manual for almost any LCD monitor from Samsung, LG, BENQ, HP, Acer and others. Here we go.
I divided the malfunctions of LCD monitors into 10 points, but this does not mean that there are only 10 of them - there are many more of them, including combined and floating ones. Many of the breakdowns of LCD monitors can be repaired with your own hands and at home.
1st place – monitor does not turn on
at all, although the power light may blink. In this case, the monitor lights up for a second and goes out, turns on and turns off immediately. In this case, tugging at the cable, dancing with a tambourine and other pranks do not help. The method of tapping the monitor with a nervous hand usually doesn’t help either, so don’t even try. The reason for this malfunction of LCD monitors is most often the failure of the power supply board, if it is built into the monitor.
Recently, monitors with an external power supply have become fashionable. This is good because the user can simply change the power source in case of breakdown. If there is no external power source, you will have to disassemble the monitor and look for a fault on the board. in most cases it is not difficult, but you need to remember about safety precautions.
Before fixing the poor guy, let him stand for 10 minutes, unplugged. During this time, the high-voltage capacitor will have time to discharge. ATTENTION! It is DANGEROUS TO LIFE if the PWM transistor also burns out! In this case, the high-voltage capacitor will not discharge in an acceptable time.
Therefore, EVERYONE check the voltage on it before repairing! If dangerous voltage remains, then you need to discharge the capacitor manually through an insulated one of about 10 kOhm for 10 seconds. If you suddenly decide to short-circuit the leads, then protect your eyes from sparks!
Next, we proceed to inspect the monitor’s power supply board and replace all burnt parts - these are usually swollen capacitors, blown fuses, transistors and other elements. It is also MANDATORY to solder the board or at least inspect the soldering under a microscope for microcracks.
From my own experience I will say that if the monitor is more than 2 years old, then 90% there will be microcracks in the soldering, especially for LG, BenQ, Acer and Samsung monitors. The cheaper the monitor, the worse it is made at the factory. To the extent that the active flux is not washed away - which leads to failure of the monitor after a year or two. Yes, yes, just when the warranty ends.
2nd place - the image blinks or goes out
when you turn on the monitor. This miracle directly indicates to us that the power supply is faulty.
Of course, the first thing you need to do is check the power and signal cables - they must be securely fastened in the connectors. A flickering image on the monitor tells us that the monitor's backlight voltage source is constantly jumping out of operating mode.
3rd place - turns off spontaneously
after the time has elapsed or does not turn on immediately. In this case, again, there are three common malfunctions of LCD monitors in order of frequency of occurrence - swollen electrolytes, microcracks in the board, faulty microcircuit.
With this malfunction, a high-frequency squeak from the backlight transformer can also be heard. It typically operates at frequencies between 30 and 150 kHz. If its operating mode is disrupted, vibrations can occur in the audible frequency range.
4th place - no backlight,
but the image is visible under bright light. This immediately tells us that LCD monitors are faulty in terms of backlighting. In terms of frequency of occurrence, it could be placed in third place, but it is already taken.
There are two options - either the power supply and inverter board burned out, or the backlight lamps are faulty. The last reason is not common in modern monitors. If the LEDs in the backlight fail, then only in groups.
In this case, the image may darken in places at the edges of the monitor. It is better to start repairs by diagnosing the power supply and inverter. The inverter is that part of the board that is responsible for generating a high-voltage voltage of about 1000 Volts to power the lamps, so under no circumstances should you try to repair the monitor under voltage. You can read about it on my blog.
Most monitors are similar in design, so there shouldn't be any problems. At one time, monitors simply fell off due to poor contact near the tip of the backlight. This can be cured by carefully disassembling the matrix in order to get to the end of the lamp and solder the high-voltage wiring.
A simpler way out of this unpleasant situation can be found if your friend-brother-matchmaker has the same monitor lying around, but with faulty electronics. It won’t be difficult to make two monitors of similar series and the same diagonal.
Sometimes even the power supply from a monitor with a larger diagonal can be adapted for a monitor with a smaller diagonal, but such experiments are risky and I do not recommend starting a fire at home. But in someone else’s villa, that’s a different matter...
6th place - spots or horizontal stripes
Their presence means that the day before you or your relatives had a fight with the monitor over something outrageous.
Unfortunately, household LCD monitors are not equipped with shockproof coatings, and anyone can offend the weak. Yes, any decent poke with a sharp or blunt object will make you regret it.
Even if there is a small trace or even one broken pixel left, the stain will still begin to grow over time under the influence of temperature and voltage applied to the liquid crystals. Unfortunately, it is not possible to restore dead monitor pixels.
7th place - no image, but backlight is present
That is, a white or gray screen appears on your face. First, you should check the cables and try connecting the monitor to another video source. Also check whether the monitor menu is displayed on the screen.
If everything remains the same, look carefully at the power supply board. The power supply of an LCD monitor usually generates voltages of 24, 12, 5, 3.3 and 2.5 Volts. You need to use a voltmeter to check if everything is okay with them.
If everything is in order, then carefully look at the video signal processing board - it is usually smaller than the power supply board. It contains a microcontroller and auxiliary elements. You need to check if they are getting food. Touch the contact of the common wire with one (usually along the outline of the board), and with the other, walk along the pins of the microcircuits. Usually the food is somewhere in the corner.
If everything is in order regarding the power supply, but there is no oscilloscope, then we check all the monitor cables. On their contacts. If you find something, clean it with isopropyl alcohol. In extreme cases, you can clean it with a needle or scalpel. Also check the board with the monitor control buttons.
If all else fails, then perhaps you are faced with a case of broken firmware or microcontroller failure. This usually happens from surges in the 220 V network or simply from aging of the elements. Usually in such cases you have to study special forums, but it’s easier to use them for spare parts, especially if you know a familiar karateka who fights against unwanted LCD monitors.
8th place – does not respond to control buttons
This case can be easily treated - you need to remove the frame or back cover of the monitor and pull out the board. Most often there you will see a crack in the board or in the solder.
Sometimes there are faulty or . A crack in the board violates the integrity of the conductors, so they need to be cleaned and soldered, and the board must be glued to strengthen the structure.
9th place - reduced monitor brightness
This occurs due to aging of the backlight bulbs. According to my data, LED backlight does not suffer from this. It is also possible that the parameters of the inverter may deteriorate, again due to the aging of the components.
10th place - noise, moire and image jitter
This often happens due to a bad VGA cable without an EMI suppressor -. If replacing the cable does not help, then it is possible that power interference has penetrated into the imaging circuits.
Usually they are eliminated from the circuit design by using filter capacitors for power supply on the signal board. Try replacing them and write to me about the result.
This concludes my wonderful rating of the TOP 10 most common malfunctions of LCD monitors. The bulk of data on breakdowns was collected based on repairs of such popular monitors as Samsung, LG, BENQ, Acer, ViewSonic and Hewlett-Packard.
This rating, it seems to me, is also valid for and. What is your situation on the LCD monitor repair front? Write to and in the comments.
Sincerely, Master Pike.
P.S.: How to disassemble the monitor and TV (how to snap off the frame)
The most common questions when disassembling LCD monitors and TVs are how to remove the frame? How to release the latches? How to remove the plastic case? etc.
One of the craftsmen made a good animation explaining how to remove the latches from engagement with the body, so I’ll leave it here - it will come in handy.
To view animation— click on the image.
Most often, the average user encounters the following causes and malfunctions:
Hardware “inconsistency” between the monitor and the computer’s video card;
Damaged cable;
An unsuitable driver, and not necessarily a display driver - most often a video card.
The main reasons why the computer monitor has a blurry image
To diagnose and resolve such problems, you must do the following:
1. Use a modern digital monitor connection
Almost any modern monitor, when connected in this way, can automatically configure itself to the best parameters. This is usually done through a fairly simple and intuitive monitor menu - by selecting an item called “Auto Configuration”.
2. Configuring image output parameters.
Limit specific hardware capabilities. To begin with, set everything to default (brightness, color, temperature), and set the frequency to 60 Hz.
note! This must be done both on the device itself and in the video card software. It must be remembered that the monitor driver is not that important - it is usually responsible only for accurate color reproduction, but not for various fine settings, such as anti-aliasing or frequency.
3. Setting up and updating the video card driver
A common problem is when the standard settings of the video card do not have a resolution supported by the display. This can be solved by reinstalling or updating the video card drivers, or changing the resolution on the monitor, if this is possible from its menu.
Important: Modern video cards are very complex and functional devices. The number of settings items for them is in the hundreds. Ultimately, it may turn out that all the problems with the image arose due to one deeply hidden item, for example, “Stretched Scan” in the “Scaling Settings”.
To avoid such problems, it is better to use standard default values and not try to achieve the perfect picture through advanced options. This should be done only with a clear understanding of what a specific menu item is responsible for.
This instruction details what to do if you see blurry fonts in Windows 10 or individual programs and applications, which can happen both after changing the scaling in the screen settings, and without these actions.
We'll first talk about ways to fix screen resolution issues that are obvious to most users but may be overlooked by novice users, followed by other ways to fix blurry text in Windows 10.
This item is for those users who do not fully understand what the physical resolution of a monitor screen is and why the resolution set in the system should correspond to the physical one.
So, modern monitors have such a parameter as physical resolution, which is the number of horizontal and vertical pixels on the screen matrix, for example, 1920x1080. Moreover, if you have any resolution set on your system that is not much different from the physical one, you will see distortion and blurriness of the fonts.
Therefore: if you are not sure, make sure that the screen resolution you set in Windows 10 matches the actual screen resolution (in some cases this may cause the font to appear too small, but this can be corrected by scaling options).
Note: if you use several monitors (or a monitor + TV) and the image is duplicated on them, then Windows, when duplicating, uses the same resolution on both screens, and for some of them it may not be “native”. There is only one solution here - change the operating mode of two monitors to “Expand screens” (by pressing the Win + P keys) and set the correct resolution for each monitor.
Removing text blur when zooming
If the problem with blurry fonts occurred after changing the sizes of elements in “Right click on the desktop” - “Display settings” - “Change the size of text, applications and other elements” by 125% or more, and restarting the computer or laptop did not fix the problem, try next option.
And the second option of the same method:
After applying the settings, you will be asked to log out, and after logging in you should see the changed sizes of fonts and elements, but without blurring (using this option applies a different scaling than in Windows 10 display options).
How to fix blurry fonts in programs
Not all Windows programs support correct scaling and, as a result, you may see blurry fonts in some applications, while the rest of the system does not experience such problems.
In this case, you can fix the problem as follows:
The next time you run the program, the problem with blurry fonts should not appear (however, they may appear small on high-resolution screens).
ClearType
In some cases (for example, due to incorrect operation of video card drivers), the problem with blurry text may be caused by incorrect operation of the ClearType font smoothing function, which is enabled by default in Windows 10 for LCD screens.
Try disabling or configuring this feature and check if the problem is resolved. To do this, type ClearType into the taskbar search and run “Adjust ClearType Text.”
Additional Information
There is also a Windows 10 DPI Blurry Fix program available online to solve the problem of blurry fonts. The program, as far as I understand, uses the second method from this article, when instead of Windows 10 scaling, the “old” scaling is used.
To use it, just install “Use Windows 8.1 DPI scaling” in the program and configure the desired scaling level.
You can download the program from the developer’s website windows10_dpi_blurry_fix.xpexplorer.com- just don't forget to check it out on VirusTotal.com (it's currently clean, but there are some negative reviews, so be careful). Also keep in mind that the program must be launched every time you reboot (it will add itself to startup.
And finally, if all else fails, double-check whether you have the original latest drivers for your video card installed, not by clicking “update” in the device manager, but by manually downloading from the corresponding official sites (or using NVIDIA and AMD utilities) .
Computers and peripheralsBlurry images on a computer monitor can be caused by various reasons.
Most often, the average user encounters the following causes and malfunctions:
Hardware “inconsistency” between the monitor and the computer’s video card;
Damaged cable;
An unsuitable driver, and not necessarily a display driver - most often a video card.
The main reasons why the computer monitor has a blurry image
To diagnose and resolve such problems, you must do the following:
1. Use a modern digital monitor connection
Almost any modern monitor, when connected in this way, can automatically configure itself to the best parameters. This is usually done through a fairly simple and intuitive monitor menu - by selecting an item called “Auto Configuration”.
2. Configuring image output parameters.
Limit specific hardware capabilities. To begin with, set everything to default (brightness, color, temperature), and set the frequency to 60 Hz.
Note! This must be done both on the device itself and in the video card software. It must be remembered that the monitor driver is not that important - it is usually responsible only for accurate color reproduction, but not for various fine settings, such as anti-aliasing or frequency.
3. Setting up and updating the video card driver
A common problem is when the standard settings of the video card do not have a resolution supported by the display. This can be solved by reinstalling or updating the video card drivers, or changing the resolution on the monitor, if this is possible from its menu.
Important: modern video cards are very complex and functional devices. The number of settings items for them is in the hundreds. Ultimately, it may turn out that all the problems with the image arose due to one deeply hidden item, for example, “Stretched Scan” in the “Scaling Settings”.
To avoid such problems, it is better to use standard default values and not try to achieve the perfect picture through advanced options. This should be done only with a clear understanding of what a specific menu item is responsible for.
tdblog.ru
How to fix a blurry, cloudy, unclear image on the monitor?
Monitor ViewSonic VX2370Smh-LED. Video card SAPPHIRE HD 5870 1GB GDDR5 PCIE (Game Edition) Today I reinstalled Windows (win7 x64 professional, license), after reinstallation it did not see my resolution at first, and when it saw it, the picture was smaller than the size of the monitor. I went into the monitor settings and turned on the “Screen Fill” function, the picture spread out, but the blur remained. If you reset your monitor settings to default, “Screen Fill” is simply turned off, and the blurriness remains. - Video card drivers are up to date. - The monitor driver is installed (Standard Monitor Driver Signed Windows 7 x64 from the official website). - The resolution is native - 1920x1080. - 60Hz, tried other values, did not help. - Connected via HDMI.
I tried turning off TrueType font anti-aliasing, it doesn’t help, and the blur is not only in fonts.
- Question asked over two years ago
- 38909 views
toster.ru
Blurred image on the monitor
It’s hard to say exactly how many years I’ve been using a personal computer. But I always tried to use LCD monitors. The picture is better on them, and they take up less space. But what is especially characteristic is that everyone sometimes had the same problem, which will be discussed below. The difficulty is that it is a little difficult to describe in words, however, it is worth a try. How can I say this..? Often the image on the monitor seems to be “blurred” to the right or left. This problem is most noticeable in contrasting areas. For example, when black text is printed on a white background, there is a gray “tail” or “trail” of the text on the side. (click to enlarge) In order to better understand what we are talking about, let's look at the image on the left, which I specially drew in Photoshop. Since this will not be noticeable on a regular screenshot, a similar effect can only be clearly seen on the screen or photograph. So, we see that the picture is “smeared” or simply repeated horizontally many times, as if when moving. By the way, in English there is such a very appropriate concept here - monitor blur. A similar question has been raised on the Internet more than once (it’s easy to check thanks to Google), but no one has offered a good solution. Of course, the first step is to enable automatic image correction on the screen itself, and then update the drivers for the video card. But the most effective way, which has helped me out more than once (let me be the captain of the obvious for a little while), is to simply check the cable that goes from the system unit to the monitor. Often these stripes and interference may appear not because of a problem, but because the signal is partially interrupted - just try to re-plug the VGA cable.
