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故障现象:使用一年多时间后,出现“花屏”故障。LCD使用一段时间后出现“花屏”故障,一般是显示器内部的同步电路有故障、连接接口插针接触不良或传输电缆连接不良等。可按以下方法进行检修:首先断开显示器电源,拆开外壳,露出内部的连接电缆,用万用表检测连接插针与电缆线是否有断路、短路现象。若无则沿着电缆连接线的走向找到PCB(印刷电路板)上的输入控制单元,用万用表对各元器件进行检测,看是否有已损坏的元器件;若无则可能是控制电路的可调电位器不良。这两个可
Symptom: After using for more than a year, there is “Huaping” fault. LCD use for a period of time after “Huaping ” failure, usually the monitor internal synchronization circuit is faulty, poor connection interface pin or poor transmission cable connection. Maintenance can be carried out as follows: first disconnect the monitor power, open the shell, exposing the internal connection cable, with a multimeter to detect the connection pin and cable there is an open circuit, short circuit. If no cable along the cable to find the direction of the PCB (printed circuit board) on the input control unit, with a multimeter on the detection of various components to see if there are damaged components; if there may be no control circuit Poor potentiometer adjustment. These two can be