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故障现象:无图像、无字符、无雪花点,光栅亮度高、有回扫线、略收缩。故障分析:故障通常是显像管阴极电压低或加速极电压高引起的。
Symptoms: no images, no characters, no snow, raster high brightness, a retraction line, a little contraction. Fault Analysis: Fault is usually caused by cathode tube cathode voltage is low or accelerating voltage is high.