LCD screen flower soft failure, LCD screen flower screen failure

To give you a comprehensive answer Take your time Monitor screen is an extremely common failure, there are many reasons, 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. The following are some thoughts and experiences that I hope can be used for your reference.

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.

4. Poor heat dissipation effect of the main control chip of the graphics card: This will also produce the phenomenon of blurred screen failure, and the solution is to improve the heat dissipation performance of the graphics card.

5. The video memory speed is too low: When the video memory speed is too low to match the speed of the host, the screen will also be blurred, and the solution is to replace the video memory with a higher speed, or reduce the speed of the host.

6 Video memory corruption: When the video memory is damaged, there will be a phenomenon of blurred screen messy characters when the system starts, and the solution is that the video memory bar must be replaced.

7.Virus cause: Some viruses will also appear when the screen appears, and the solution: use antivirus software to eliminate it.

Check the cable from the main unit to the monitor.

My dell notebook was also broken like this some time ago.

At first, I thought the graphics card driver was broken.

Later, I learned that it wasn't a problem with the software, it was the hardware, that is, the graphics card burned out, and it was probably caused by the fact that you often played games and didn't clean up the air outlet.

If it is under a warranty, I will report for repair as soon as possible.

If it's not there, you have to change it, if you have an integrated graphics card, you can change the entire motherboard, and if you have a discrete graphics card, you can change the graphics card.

1.Have you installed any other software lately?

2.Most likely it's a hardware issue. Don't worry about going to the repair center and not being able to test it, they have tools.

1. The screen is blurred due to the poor signal of the LCD display. 2. The logic board of the LCD monitor is faulty. The input ** signal sent by the digital image processing to the circuit is not normal, if there is a normal waveform input, it means that the previous digital image is working normally in the processing circuit.

If the input voltage is normal, it means that the power supply spine base circuit is working normally. Check whether the waveform of the LCD drive signal output by the screen cable interface on the logic board is normal. Suggested Treatment:

1. Move the TV to a place with a relatively better signal and try again, if the picture of the TV is still not good, it means that the TV itself is faulty, if the picture becomes clearer, it is a problem with the signal of cable TV. 2. If the logic board fails, it must be repaired and installed by professionals. 3. It may be the cause of moisture, resulting in leakage of the TV screen line, disassemble the machine to check whether the lower screen circuit is unobstructed, connect the logic board with the screen line, and then touch the chip on the logic board with your hand to see if the image will change.

4. If images and characters appear on the screen, it may be that the screen parameters are wrong, and you can enter the bus screen adjustment parameters. 5. If it is determined that the display screen is broken, then the only way to change the screen is to find the relevant after-sales service department of Changhong.

1. The first trick: check whether the connection between the monitor and the graphics card is loose. Clutter and speckled screens are the most common phenomenon caused by poor contact.

2. The second trick: 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.

3. The third trick: 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: keep some parts that may produce electromagnetic interference away from the graphics card installation (such as hard disk) as far as possible and then see if the blurred 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.

4. The fourth trick: check whether the resolution or refresh rate of the display 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.

5. The fifth trick: check whether the incompatible graphics card driver is installed. This situation is generally overlooked, as graphics card drivers are being updated faster and faster (especially for NVIDIA graphics cards) 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.

When the temperature of the LCD display is low, the screen is blurred, which is caused by the dampness of the display. When the temperature is low in winter, the picture shakes so badly that you can't even see the icons and text clearly, but after a minute or two, it will return to normal, this phenomenon mostly occurs in wet weather, and it is due to the moisture inside the display.

To completely solve this problem, you can use the moisture-proof sand in the food packaging to string it with cotton thread, and then open the back cover of the monitor, and hang the moisture-proof sand on the tail of the neck of the picture tube near the tube base. This way, even in wet weather, there will be no more problems.