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LMV321AIDBVR 在板子上面不工作

在贸泽采购了210个 LMV321AIDBVR,在板子上面不工作,出现异常不亮灯的情况,重新更换了芯片,然后就正常工作了,请问这是什么情况呢?附件有视频可提供参考,谢谢!