故障①：供电都有还是不开机

兰德手机维修培训学校www.szlande.com教你维修

维修思路：

1.测量U1202主电源供给CPU的电源维持信号是否正常或者断线.

2.电源维持信号在主电源的L7角到CPU的AK32角

3.测量U1202主电源的L7角出现无阻值可以判断CPU虚焊或者断线，重置CPU或者飞线解决故障

故障②：供电都有，不开机

维修思路：

1.cpu 到电源的测试时钟故障

2.主电源的L9角（无阻值）是到CPU的AH31角

3.可以判断为断线或者cpu虚焊引起的故障

最后我们跟大家分享一段视频，iphone6plus  cpu 虚焊重值，解决故障~！（视频提供者：刘伟文）

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