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故障现象:COMPAQ 444型15“电脑彩显,屏幕左右枕形失真严重,行幅也偏窄,调节行幅按钮时行幅变化很小。 分析与排除过程:从故障现象看,该显示器同时存在两种故障:一是存在枕形失真,二是行幅窄。用户反映,两种现象是同时发生的,而根据故障发生的一般规律,绝大多数故障为“一点故障”,因此判断上述两种现象可能是同一故障点引起的。首先应检查左右枕形失真电路各元件,看是否某个元件失效,但在行偏转电路中并未找到通常用于枕校的磁饱和变压器,维修工作因此搁浅。
Symptoms: COMPAQ 444 type 15 ”computer color display, serious distortion of the pincushion around the screen, the line width is also narrow, adjust the line width of the line change is very small. Analysis and troubleshooting process: From the fault phenomenon, the monitor at the same time There are two kinds of faults: one is pincushion distortion, and the other is line width is narrow. Users reflect that the two phenomena occur simultaneously, and according to the general law of failure, the vast majority of faults are “a little fault”. Therefore, The two phenomena may be caused by the same point of failure.First, you should check the left and right pincushion circuit components to see if a component failure, but in the line deflection circuit did not find the magnetic saturation transformer is usually used for pillow school, maintenance work So stranded.