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图1被保护电路检测的电源、行输出、场输出、束电流电路发生故障时,或保护电路发生元件参数改变时,都会造成保护电路启动,引发彩电自动关机故障。确定是保护电路启动进入自动关机故障时,一是在关机前观察故障现象,对相应的电路进行检查和测量,二是对保护电路本身进行检查,三是
Figure 1 is detected by the protection circuit power supply, line output, field output, beam current circuit failure, or protection circuit components when the parameters change, will cause the protection circuit starts, triggering auto-shutdown color TV failure. Determine the protection circuit to start into the automatic shutdown fault, one is to observe the fault phenomenon before the shutdown, the corresponding circuit for inspection and measurement, the second is to protect the circuit itself, the third is