收到同行送来的故障机壹台长虹LT42510液晶电视，故障表现为开机没有反应。故障原因分析：拆机经过检查，发现IC914(LT431AC2)及光耦IC910(TCET11036 )损坏。用同型号元件代换后，开机故障机修到这里，终于修好值得探讨。。 |
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