Why laptop screen become white under a normal use? Is the quality of screen or the graphics cards is damaged? Is the reason the connector of LCD screen and motherboard not good? Why does laptop screen become white occasionally? How we can determine the meaning of the laptop screen become white?
Let’s give you a detaied answer about White Screen of Death herein with these questions. White Screen of Death is laptop screen display a blank while boot but you can hear the sound into the WINDOWS.
If you want know what is White Screen of Death and whether it is closely linked with the graphics card. As long as connect the laptop to PC monitors and boot to see whether the display shows normal( The back of laptop has a external PC monitor port ). If the PC monitor and laptop screen display white, the possibility of graphics card damaging is high. Laptop graphics cards divides into two groups sync signal output, a group of supply of LCD screen, the other group for the display port, so the best testing method of cards is connecting to a PC monitor.
How to solve when you meet White Screen of Death? The explain steps are as follows:
There are four screws in corners of the screen are covered with plastic pellets, so you must be careful whether there are screw around when demolishing so as to avoid damage the shell. Also note that the intensity of demolition when shell should be uniform, the hand will not pressure on the screen in order to avoid excessive force to make the screen crumble, the consequences will be more serious.
The right side of front screen placing a high-voltage interface and high-pressure section of tubes, the laptop must be shutdown if you want to open the connecting tube，because of the high-voltage power supply is 15-19V, change 10V to 10KV by high-voltage wire circle to light the lamp. So high-voltage lines are also labeled on the circle: CAUTION: HIGH VOLTAGE.
Out of the dismantled the lamp interface from inverter carefully, we can see the line connect the screen and motherboard after down the screen gently. We can re-connect the interface once again to fix the bottom left corner of the screen lines firmly. Let’s take a look at screen models: (TORISAN-TM121SU-02L07) 800 * 600 resolution is now on the markert has rarely seen. Now the mainstream of the majority of laptop LCD with 1024 * 768 or 1400 * 1024 resolution.
There is a connection cable at the top, this cable is a circuit board from the screen, the output voltage to supply electricity to the screen resolution module.Lack of color screens are likely to be to distinguish the output voltage caused by the module.
Motherboard chip of the screen multi-group-voltage power supply by connecting lines to the module, the module output voltage of steady flow showed transistors give shiy. But for white of death, distinguish modules voltage doesn’t input so that we can rule out the cable loose.
Identify the module of its role: ro distinguish steady flow voltage to the transistor for the display and normal display colors. It’s need to mention that we often can see the LCD screen has one or more of bright lines, it may because fo contact problems. The cause leading to bright-lines is that transistor damages, the dramatic impact the voltage instability thus broke the transistor. Therefore, the laptop at the factory must go through a number of dramatic crash test. It is also one of the LCD screen tests.
We look whether motherboard connection is loose, it can be found a chip to connect LCD screens and motherboard in the control screen the role of the regulator. This chip will control the voltage input and output to reduce power consumption when screen saver or hibernation(You will find that it will automatically enter screen saver when we together the together on the screen and the host screen in the use of the computer, and it will auomatically light up when you re-open ).
Try again after the replacement of the LCD screen. The murderer of white of death is TORISAN-SLA402F4D.
Let’s share some tips about LCD screen protection. First of all, we should avoid slide LCD screen and the host frequently, you can adjust computer sleep setting under not turned off, do not be lightly by hand or foreign body to percuss LCD surface, you must use a soft cloth for LCD screen cleaning. Another point to say, there are so many exalted vehicles in the society, do not compete with other people by bus or subway and regardless of the LCD screen. It is very bad that you find LCD screen has cracked when open the laptop at home.