【摘 要】
：
(2)指示灯亮后熄灭,开关电源输出电压上升后降低此现象是以FSCQl265RT为核心的初级保护电路执行保护所致。常见为开关电源负载电路、整流、滤波电路短路、漏电,稳压环路发生
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(2)指示灯亮后熄灭,开关电源输出电压上升后降低此现象是以FSCQl265RT为核心的初级保护电路执行保护所致。常见为开关电源负载电路、整流、滤波电路短路、漏电,稳压环路发生故障引起电源输出电压过高。对于电源初级过流保护启动,首先检查行输出电路和开关电源次级整流、滤波电路是否发生短路故障,特别是检查行输出电路的行输出管、行输出变压器、偏转线圈、逆程电容器和阻尼二极管是否发生严重短路故障。
(2) When the indicator light is on and off, the output voltage of the switching power supply will decrease after the voltage rises. This phenomenon is caused by the primary protection circuit with FSCQ1265RT as the core. Common for the switching power supply load circuit, rectifier, filter circuit short circuit, leakage, voltage regulator loop failure caused by the power supply output voltage is too high. For the primary overcurrent protection of the power supply, firstly check the secondary rectification of the line output circuit and the switching power supply, and if there is a short circuit fault in the filter circuit, in particular, check the line output line of the line output circuit, line output transformer, deflection coil, reverse capacitor and damping Diode serious short circuit failure.
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