The reason and solution of the dim of notebook screen

Analysis and solution of Dim Fault in Notebook screen--analysis and solution of Dim fault in Notebook screen there is a lamp on the LCD screen on the LCD screen, once the notebook screen is dark, the user thinks that the lamp is broken, in fact, is a misunderstanding, in fact, the reason is not just that one, The following together with you to summarize the reasons for the notebook screen dark.

　　What is the reason why the laptop screen is dark

If you start to find the screen (TFT) is very dark, contrast, light dark notebook screen or very dark, can not see clearly. That is the screen Dark Spring Festival notebook shopping tips!

　　How is the screen dark produced? There are 4 common cases:

The first type of lamp is a problem, the lamp aging or short-circuit will make the display dark, if the lamp is a problem, only to professional maintenance company, lamp aging and short-circuit is very rare, aging is generally because of prolonged use or use of the process has a collision (normal use of the lamp life can reach about 3-5 years), Short-circuit is the screen shell of the metal caused by more, the screen shell cracked carefully used to prevent short-circuit.

The second is the motherboard no voltage for high-voltage board, motherboard problems, aging or short-circuit will appear, most can be repaired, not necessarily to replace the motherboard.

The third is the high-pressure plate aging or burnout or high-pressure plate power cable release, burn off, the screen caused by high-pressure plate is more common, because the high-pressure plate working at high temperature, the chip will be more prone to aging or burn out

The fourth kind is the screen line's break, also often causes the screen dark reason, because NB all is the folding type, the force too fiercely opens and the closed screen will wear the screen line, the frequent use will easily cause the screen line to break.

General graphics problems are not caused by the screen, most of the flower screen or no display. Screen Dark Maintenance In addition to the lamp problem is to replace, a piece is not the original high-pressure plate may cause the LCD screen adjustable brightness does not work (the situation depends on individual), under normal circumstances, the high-pressure plate can be repaired.

Summary: In general, it is not recommended that you disassemble the repair. The best solution and cause of failure are provided by netizens, as follows:

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　One of the reasons why a laptop screen is dimmed: motherboard issues

It is possible that the computer motherboard is not voltage or high-voltage board and motherboard problems, aging and short-circuit failures, in general, most of these failures can be repaired without necessarily changing the motherboard

Laptop screen hair Dark reason two: screen break

The screen line break will cause the display screen to darken, because the notebook is folded, so if we force too hard to open and close the screen will wear screen or even screen break. We need to pay more attention to it in our usual use.

　Notebook screen Hair Dark reason three: high-pressure plate problem

Computer high-pressure plate aging or is burned or high-pressure plate power cable release, burning, and other reasons, due to high-pressure plate caused by the screen is more common. The high-pressure panel of the display for a long time working at high temperature, the chip will be more prone to aging or burn out.

　Notebook screen Hair Dark reason four: Display lamp problem

Tube tube Aging or short-circuit and other reasons will make the screen display is dark, such a situation we can send a notebook to professionals for processing or return to the factory, and the lamp aging is generally due to prolonged use or in the use of the process of collision, The internal short-circuit of the laptop screen may cause more metal in the screen shell, in addition to the laptop display screen shell cracked can also prevent short circuit.