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故障现象:图像有几条竖条(肋骨)干扰,去掉天线光栅有较少的横细亮线干扰。故障分析:竖条干扰是行输出管集电极反峰波形严重变形形成辐射引起的。通常是:行输出变压器性能变差,行输出管基极或发射极防辐射电感有问题、行偏转电路阻尼电阻开
Symptoms: the image has a few vertical bars (rib) interference, remove the antenna grating less horizontal fine line interference. Failure Analysis: Vertical interference is the output tube collector anti-peak waveform serious deformation caused by radiation. Usually: the line output transformer performance deterioration, line output tube base or emitter radiation protection inductance problems, line deflection circuit damping resistance on