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介绍了Ｐ３５０Ｓ卫星电视接收机开关电源原理，开关电源电流控制芯片ＩＰ３８４４Ｎ，着重对Ｐ３５０Ｓ开关电源的故障现象进行分析，辅以相应的维修程序及对策。
Introduced P350S satellite TV receiver switching power supply principle, switching power supply current control chip IP3844N, focusing on the phenomenon of P350S switching power supply failure analysis, supported by the appropriate maintenance procedures and countermeasures.