Bruises on the LCD screen

Most second-hand liquid crystal displays have this error. For laptops, bruises will greatly affect machine value. The "disease" can be overcome with prices ranging from US $ 30-40.
Smaller or darker areas than the surrounding areas commonly found on LCD screens are called bruises. The majority of liquid crystal screen bruises are difficult to detect without eye contact, especially for mild bruises.

Tran Vu Nguyen, an old LCD collector in District 7, Ho Chi Minh City, said: " Most of the most liquid crystal display screens are second-hand products, which are bad or light. " Mr. Nguyen shared, in order to detect the error, you should change the desktop by full color, or use any software that supports background color to turn black and leave full screen mode to easily detect errors . Good screen will not have bright dots, black layer must be solid and no white dots. Many LCDs are half-turned to brown, half to black. After checking with a black background, you can use a white background to continue the test.

According to Mr. Nguyen Thanh Hieu, a technician at Gia Phu Street Computer Store, District 6, Ho Chi Minh City, the error on the LCD screen appears because during the transportation process, the front side is directly impacted in a distance. prolonged time, or users often use strong hand touches so that its liquid crystal structure is deflected. These marks do not have a phenomenon that spreads around but will somewhat diminish or almost completely disappear if there is a slight error.

Bruises on the LCD screen Picture 1
A laptop has broken the screen. Photo: Photobucket .

This faulty screen causes many experts to lose out by its complex layered liquid crystal structure. However, some skilled workers can cure this "disease".

Mr. Le Xuan Hue, a technician at Thien Thao laptop, Vo Van Tan Street, District 3, Ho Chi Minh City, said: " People in the profession hide very well about techniques to overcome this error. Only know roughly that the inspector See which bruises belong to which class and replace them with another class ".

Currently, there are not many places that can recover LCD phenomenon. In Ho Chi Minh City area, specialized people often gather goods at Nghia Thang Company, Nguyen Cu Trinh Street in District 1. Some other shops may receive repairs but also have to bring goods to this point.

Mr. Hue also said that the mechanic only fixes the error on the LCD of the laptop, and the same screen for the desktop PC, they do not, because it is difficult to get high wages.

Wages depend on the model of repaired machines. The more new life, the higher the price but not more than 40 USD for once. In addition, customers will be given bruises warranty for 1-3 months.

Bruises on the LCD screen Picture 2
Bruises on the screen are common in old laptops or screens. Photo: Hoang Ha .

In order to prevent bruises, experts recommend that the hands or hard objects should not be directly impacted on the screen. Protective measures such as using a plastic front panel are also very effective.

Some forums offer this method of treatment by using a thick cushion, using a finger or the tip of the pen to press hard on the area of ​​the error. However, many technicians say: ' In principle, it is impossible to fix that. Doing so is likely to make the screen error more '.

On the LCD there is another type of error that is easily confused with bruises as dead spots. This point is very small, only about the size of sand grains, usually in white, black or purple. This is a phenomenon that originates from the production stage and is completely irreparable. Every expert said that a standard screen should not have more than 3 dead spots.