Skyworth cool open LCD TV Huaping reasons and failure analysis

I believe that everyone is not unfamiliar with Skyworth's cool LCD TVs, but we will find that they have a screen when using them. What is going on here? Today, Xiao Bian will talk with everyone about its solution.


Skyworth cool open LCD TVs all use LED display, it does not exist in the lamp, but not the bad lamp, LCD TV screen and light source (display internal backlight and backlight) has nothing to do.
The appearance of Huaping is caused by the failure of the TV motherboard, power supply board, display driver board (screen control board), and the display screen. The most common is the display driver board and the motherboard's LVDS display connector cable, the two ends of the socket contact Bad, then the motherboard or display is damaged.

First, check whether the resolution or refresh rate of the LCD splicing screen is set too high. LCD splicing screen resolution is generally lower than the crt display, if more than the manufacturer's recommended optimal resolution, there may be Huaping phenomenon.



Skyworth cool open LCD TV Huaping



Secondly, we can check whether the video card is overclocked, and "regulate the remedy." If the video card is overclocked, the screen will often appear. In this case, the frequency of overclocking should be properly reduced, but it should be noted that the frequency of video memory must be reduced first.
Again, check if an incompatible graphics card driver is installed. This situation is generally easy to ignore, because the graphics card driver update faster and faster (especially nvidia video card), some users can not wait to install the latest version of the driver.
In fact, some of the latest drivers are either test versions or versions that are optimized for a particular graphics card or game. Using such drivers can sometimes lead to the appearance of flower screens. Therefore, it is recommended that you use Microsoft-certified drivers as much as possible. It is best to use the drivers provided by the graphics card manufacturers.



Skyworth cool open LCD TV Huaping



Finally, check the quality of your graphics card. If the video card appears after the replacement of the video card, and after the first and second strokes fail to work, check whether the anti-electromagnetic interference (EMI) and the electromagnetic shielding quality of the video card are over.
The specific method is: Place some components that may produce electromagnetic interference away from the video card installation (such as hard disk) as far as possible, and then see if the flower screen disappears. If it is determined that the electromagnetic shielding function of the graphics card is off, the graphics card should be replaced, or the shielding mask should be made.

1, computer board and chip failure



The user menu is normal, but the picture appears to be in a flowering phenomenon. The problem is generally on the computer board and the scaler processing chip circuit. In this case, the repair worker can be asked to perform repair welding. By pressing the chip, it can be observed whether there is a significant change in the screen blossoming phenomenon. If there is a noticeable change, it is due to the welding of the chip. Use a special tool such as a hot air gun to heat the IC. , re-welding the poor contact foot can be.



Skyworth cool open LCD TV Huaping


2, screen failure If the flower screen after repeated power, the flower stripes, color no change, then the screen itself is broken, this time also have to change the driver board test screen.

3, LVDS plug bad contact If the screen appears to Huaping and irregular Huaping of the fault, common LVDS plug bad contact. Then clean up the connection line.

4, the driver board failure If users find the TV screen repeatedly after power, the flower stripes, color changes, it is generally a driver board failure, replace the driver board can be.
Computer connection Skyworth cool open LCD TV led to Huaping

Skyworth cool open LCD TV Huaping


There are two reasons why the screen is displayed after the computer is connected to the LCD:
1, the video line problem. 2, the resolution problem. First change the video cable. If it doesn't work, then change the computer resolution. In general, LCD TVs have their nominal resolution, say 1366x768.

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