为什么检修者在检修电视机行振荡电路故障时,要采用“电压法”、“电流法”、“信号短路法”呢?一个重要原因是因为电视机中像行输出变压器、电源开关变压器,以及行、场偏转线圈一类感性元件,在其内部即使出现了局部短路,但因大部分绕组阻值本来就很低,短路与不短路阻值变化不明显,用一般万用表无法判断,也即“电阻法”在此用不上,所以只好采用上述三种方法。把这三种方法中测得的数据与故障现象加以对照,然后进行分析推理,可以间接地判断出这类感性元 Why does the overhaul person adopt “voltage law”, “current law”, “signal short circuit law” while overhauling the oscillating circuit of the TV bank? One important reason is that because the television is like line output transformer, power switch transformer, and Line, field deflecting coil a class of inductive components, even in the internal part of the short circuit, but most of the winding resistance has been very low, short-circuit and not short-circuit resistance change is not obvious, with a general multimeter can not judge, that is, “ Resistance method ”is not used here, so I had to use the above three methods. The measured data from these three methods are compared with the failure phenomena and then analyzed and reasoned to indirectly determine such inductive elements