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ＧＳＺ－１型３００Ｗ差转机故障一例我台使用的北京广播器材厂生产的ＧＳＩ－Ⅰ型３００Ｗ电视差转机，在运行中功率放大器ＦＣ一２５２Ｆ自然损坏，换新管后阴流为零，测灯丝电压６Ｖ正常，测板压稍有偏高（６８０Ｖ），查高压供电通路未发现异常，说明高压负载电路正常...
GSZ-1 Type 300W Transformer Failure Case I use the Beijing Broadcasting Equipment Factory production of GSI-Ⅰ 300W TV transfer machine in operation, a power amplifier FC a 252F natural damage, after the new tube to zero for the shade, the test filament Voltage 6V is normal, the test board pressure slightly high (680V), check the high-voltage power supply path was not abnormal, indicating high-voltage load circuit is normal ...