If the display has a flower screen failure, just shake it a few times, and sometimes the brightness

Let's see if that's the case elsewhere.

I remember that I used to have a blurred screen because the video memory of the graphics card was broken!

1. Display aging.

2. Problems with the graphics card (take the graphics card down to remove the ash).

Caused by the virtual welding of the display, it is recommended to send it to a professional maintenance office for maintenance, the technical content of repairing the display is far greater than repairing the computer, you must find a professional maintenance office!

The CRT is aging, so let's replace it.

The monitor is aging, so it is recommended to replace it with a new one.

This can happen because there is a signal jamming around the computer. Observe whether there is a strong electric field or strong magnetic field interference around the computer monitor, magnetic field interference is very easy to cause the computer screen to shake or flicker, the elimination method is to place the computer in another open place and then observe, you can also go to another place to take a good computer to test and eliminate, try not to close the display near large electrical products. You can also restart the computer monitor to see, generally the current monitor has an automatic degaussing function during the opening process.

Other causes: Monitor hardware issues or power supply issues. The above situation is relatively rare, the most encountered is hardware problems, such as the display and the host connection of the data cable is not amount, etc., we can use the method of replacement and elimination to solve, in addition to the display power supply is only focused on the investigation of the object, in the encounter with the computer screen jitter and the computer screen flickering fault, of which the computer screen flickering encounters the most is the display power supply problem, there are also many display aging, display failure.

Check that the graphics card drivers are correct. Sometimes when we enter the refresh rate of the computer's monitor, we find that there is no refresh rate to choose from, which is caused by the incorrect or too old driver of the previous graphics card. <>

There are many causes, and the fault phenomena caused by different reasons are also different, and the solutions are also different. In the text mode, the screen is characterized by confusion of characters, and in the graphic mode, it usually appears as a graphic layer, and horizontal stripes are produced due to internal or external interference.

1 Displays produce horizontal streaks: there are two main reasons for this:

1) External interference, such as electric sparks or high-frequency electromagnetic interference near the use site of the display, this interference will cause the display screen of the display to produce white horizontal stripes. Solution: Avoid using the monitor in this situation;

2) Internal interference, this interference will make the display screen of the display appear black horizontal stripes, in this case, you can open the case to check whether there is a bad contact inside the display, whether there is a problem with the output end of the power supply or the output transformer, etc., because the reasons for this situation involve more professional technology, so it is best to ask a professional to repair it.

2 Improper display resolution setting causes blurred screen: When the monitor is set incorrectly in the resolution of Win95, there may be blurry screen failure when starting Windows, that is, the picture is layered, shaky, serious and even black screen of death. Solution:

Enter the setup or enter the safe mode of win95, and reset the display mode of the monitor.

3 Conflict between the display card and the Chinese system: In this case, when exiting the Chinese system, there will be a blurred screen, and there is no response to random keystrokes, similar to a crash, processing method: input at this time"mode c080"can be resolved.

1. Check whether the connection between the monitor and the graphics card is loose. Poor contact leads to "clutter" and "noise" shaped screens are the most common phenomenon.

2. Check whether the resolution or refresh rate of the monitor is set too high. The resolution of the LCD display is generally lower than that of the CRT display, and if it exceeds the best resolution recommended by the manufacturer, there is a possibility that the screen will be blurred.

3. Check whether the graphics card is overclocked. If the graphics card is overclocked, it will usually appear irregular and intermittent horizontal stripes. In this case, the overclocking amplitude should be reduced appropriately. Note that the first thing to do is to reduce the memory frequency.

4. Check the quality of the graphics card. If there is a problem with the blurred screen after replacing the graphics card, and it is in use.

After the first and second tricks fail to work, you should check whether the quality of the graphics card's anti-electromagnetic interference and electromagnetic shielding is passable. The specific method is: install some parts that may produce electromagnetic interference as far away from the graphics card as possible, and then see if the screen disappears.

If you are sure that the electromagnetic shielding function of the graphics card is not up to standard, you should replace the graphics card or make your own shielding cover.

5. Check whether an incompatible graphics driver is installed. This situation is generally easy to overlook, as graphics card drivers are updated faster and faster, and some users are always eager to install the latest version of the driver. In fact, some of the latest drivers are either beta versions or optimized versions for a specific graphics card or game, and using them can sometimes lead to a blurred screen.

Therefore, it is recommended that you try to use Microsoft-certified drivers, and it is best to use the drivers provided by the graphics card manufacturer.

What to do if the computer monitor has a blurred screen.

1. External interference.

If there is an electric spark or high-frequency electromagnetic interference near the use site of the monitor, this interference will cause the display screen of the monitor to produce white horizontal stripes. So try to avoid using a monitor in this case.

2. Internal interference.

This interference will cause the display screen of the monitor to appear black horizontal stripes, in this case, you can open the case to check whether there is any bad contact inside the monitor, and whether there is any problem with the output terminal or output transformer of the power supply.

3. The display resolution is set improperly.

When the display is set incorrectly in the middle of win95, there may be a blurred screen failure when starting Windows, that is, the picture is layered, shaking, serious and even black screen of death.

Solution: Enter the setup or enter the security mode of win95, and reset the display mode of the display.

Fourth, the video memory is damaged.

When the video memory is damaged, the screen will be blurred and confused when the system starts. The memory strip must be replaced.

5. Fault phenomenon.

An AOK color monitor that malfunctions after a period of use. After the computer is turned on, the monitor does not display, and after about 5 minutes, the monitor gradually lights up, but the right part of the screen is darker and has a horizontal black line, and then slowly turns to a normal state.

Fault analysis: Due to the dimming half of the phosphor screen, it is suspected that the performance of the line scan circuit damping diode is poor. The display's line-scan tube is integrated with the damping tube, making it very unlikely to fail.

The output stage supply voltage measured with a multimeter is 75V, and there is no change in the measurement when the display turns to normal.

Please pay attention not to jump the short-circuit cap, because most of the 17-inch screens are 5V driving voltage, a little careless, the consequences of misplugging into 12V are unimaginable. In this case, the screen, the driver board, and the screen line may have similar problems, but the landlord has no way to judge, it is recommended that you send it to the manufacturer's after-sales service department, and they will help you deal with it!