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3.电源和行输出电路引起的自动关机故障检修电源和行输出电路工作于高电压、大电流状态,发生故障的几率较高。当电源和行输出电路发生软故障时,也会产生自动关机故障,电源故障的特点是引起+B电压的变化。区分电源和行扫描电路故障的方法是断开行输出电路,接假负载,测量电源输出
3. Power and row output circuit caused by the automatic shutdown troubleshooting Power and row output circuit work in high voltage, high current state, the higher the probability of failure. When the power and line output circuit soft fault, it will also have an automatic shutdown fault, power failure is characterized by a + B voltage changes. Distinguish between power and line scan circuit fault method is to disconnect the line output circuit, then leave the load, measure the power output