【摘 要】
：
问:有一台4D8电视机,声音图象都很正常,看了大约二小时,光栅慢慢地暗下来,无光栅,经检查行振荡起振,有100V加速极电压,将电源切断,在显像管高压嘴用绝缘良好的螺丝批对地放电
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问:有一台4D8电视机,声音图象都很正常,看了大约二小时,光栅慢慢地暗下来,无光栅,经检查行振荡起振,有100V加速极电压,将电源切断,在显像管高压嘴用绝缘良好的螺丝批对地放电可以听到高压放电的声音,不知是否显像管坏?
Q: There is a 4D8 TV, the sound image is normal, looked for about two hours, the grating slowly dark, no grating, check the line oscillation start-up, there is 100V acceleration voltage, the power cut off in the picture tube High pressure nozzle with a well-insulated screwdriver discharge to the ground can hear the sound of high-pressure discharge, I do not know whether the CRT is bad?
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