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Diascovery1100显示问题

您好!我们的Discovery 1100套件之前使用正常,放了三个月之后再次使用,发现上电之后DMD没有显示。测试了DAD1000的电压发现Vcc的电压都是0,请问是否是DAD1000出现问题?

非常感谢!