收到同行送来的故障机壹台创维42E5ERS液晶彩电，故障表现为三无。拆机检查，发现保险管F1开路，尖峰电压吸收电容C23(1000pF/2kV)烧焦，整流桥的二极管等元件未见异常。更换F1、C23后通电试机，故障机修到这里，终于修好值得探讨。。  |
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