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望、闻、问、切检修电脑显示器,就是指在检修显示器故障时能通过检修人员的眼、耳、手、鼻等感觉器官,来了解故障产生的原因和判断故障所在的部位。望,望就是用眼睛观察。在开机壳前通过细心观察图像故障现象,来分析故障所在部位。1.观察指示灯是否亮(1)电源指示灯。电源指示灯亮一般说明电源已经工作,否则说明电源没工作。(2)行输出工作指示灯。在单频或双频显示器中指示灯电压由行输出变压器次级电路提供。如 GW-200
Look, smell, ask, cut maintenance computer monitor, refers to the maintenance of the monitor failure through the maintenance personnel eye, ear, hand, nose and other sensory organs to understand the cause of the fault and determine where the fault. Hope, hope is to use the eyes to observe. Before the case through the careful observation of image failure phenomenon, to analyze the location of the fault. 1. Observe whether the indicator light (1) power indicator. Power Indicator Light General Description The power supply is working, otherwise the power supply is not working. (2) line output work indicator. The lamp voltage is provided by the line output transformer secondary in single or dual frequency displays. Such as GW-200