| 分析与检修: 接AV信号试机故障依旧,从音频小信号处理ICMST6U89查,供电OK,测MST6U89滤波脚,当测到69脚时电压0.2V,正常应该是1.5V-1.6V.代换该脚滤波电容C354(16V/4.7UT)后试机OK . |
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