故障现象水平一条亮线,亮线下面有一条约10公分的亮带(比亮线暗),即光栅上半部没有,下半部部分压缩。故障分析很有可能是场输出级的故障。该机场输出电路用的是HM6236厚膜集成块,检查其各脚电压,发现1脚电压为110V,正常值应为74V,7、8脚电压也偏低,估计是输出电路上面一个管子集电结开路(该管 Fault phenomenon level a bright line, below the bright line there is a bright strip about 10 cm (darker than the bright line), that is, the upper grating is not, the lower part of the compression. Fault analysis is most likely a fault in the field output stage. The airport output circuit is used HM6236 thick film manifold, check the voltage of each pin and found that 1 pin voltage is 110V, the normal value should be 74V, 7,8 pin voltage is also low, it is estimated that the output circuit above a tube collector Knot open the tube (the tube