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原理图如下，上电后电源限流保护，芯片发烫，拆下芯片发现2脚对地短路，请问芯片是否已经损坏，原因应该是什么？
亲；那是一定的。不知是用PCB还是万能板做的？
是PCB，请问为什么会出现这种情况
详细查看你的PCB，看是否有接错的地方。
