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故障一:透视无高压。维修经过:拆下高压初极T1、T2。测量初极电路各测试点均正常。A1—01,A1—02各管脚电压,波形也正常。灯丝加热电路T B点输出正常,但是当测量T E、T C时电压非常微弱,用万用表欧姆档测量时,发现T E、T C不通,当时考虑为Q2短路,在准备拆下组件板时发现6C插件
Fault one: perspective without high pressure. After maintenance: Remove the high voltage primary T1, T2. Measuring the initial circuit of the test points are normal. A1- 01, A1- 02 each pin voltage, the waveform is normal. Filament heating circuit T B point output is normal, but when measuring T E, T C when the voltage is very weak, measured with a multimeter ohm file, found T E, T C unreasonable, when considered as Q2 short circuit, 6 C plug-in found in the removal of the component board