笔记本暗屏维修（Notebook hidden screen maintenance）.docVIP

笔记本暗屏维修（Notebook hidden screen maintenance） Witnessed the notebook screen maintenance process: the cubs Xian _lisa Xian, 2005 07, 21, 17:20 [original] Friends who often use notebooks may have one of the most profound experiences, that is, when a notebook is used at a certain stage, the screen will appear dark ~ ~ (1562 words) Friends who often use notebooks may have the deepest experience of feeling that when a laptop is used at a certain stage, the screen will appear dark. In this case, the term maintenance is referred to as dark screen, mainly because the high voltage board can not supply power to the LCD screen tube. The reason for the dark screen In general, we in the voltage stability under the condition of open notebook computer is easy to break the current connection line is connected with the LCD screen, the connection is not stable, relatively high probability of a dark screen. Secondly, the part of the LCD display line is placed below the LCD screen, often in the process of opening the cover and the machine cover, the connection line is damaged, and these factors are also easy to cause the phenomenon of dark screen. 2. pressure lcd led to damage to the tube The normal use of the computer will not be burned due to high voltage or disconnect the tube, the main reason for the disconnection of the tube is: the computer fell to the ground, resulting in broken light tubes, resulting in the screen can not work properly. The main board has 3-4 sets of voltage for the high voltage package, the main board has 2 sets of chips, the output voltage to the high voltage board, the chip aging or the current is too high, the chip is broken, the current can not output. Basically the LCD screen causes dark screen mainly around these aspects, and today, in the maintenance department just a Taiwan to repair the notebook, problems still appear on the LCD screen, after a preliminary diagnosis results for dark screen. Solve the LCD screen dark screen of the whole process Today, th