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TCL LE32D99 MST6M182VG 故障现象:不开机 亮蓝灯

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Post time: 5 day(s) ago
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MST6M182VG故障现象:不开机,有时又能开机维修过程:通电试机,机器开机正常,关机再开机不能开机,测试电压只有3.3V跟1.1V,查看打印信息,发现机器已经进入待机状态,但是遥控跟按键均无法开机,检查发现待机后1.25V正常时是没有电压的,而现在有1.1V,明显不正常,怀疑是3.3V电压漏电到1.25V电路上,逐一检查发现3.3V的布线跟1,。25V的布线离的很近,于是用小刀从中间划开很深,再通电试机发现待机后1.25V还是有!  估计BGA下面漏电!用热风枪架热!还是一样!!!后在1.25V到地之间加入100欧的电阻!使待机后1.25拉底到0.8 V  按待机键可以开机了!

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Post time: 5 day(s) ago
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Thanks for sharing
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Post time: Yesterday 16:51
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谢谢楼主图文并茂经验分享
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