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您好，我们自制了4710-g2evm的控制板，通过4710-g2evm的光机进行测试，断断续续会出现启动失败，最终彻底连接不上。使用放大镜查看发现，DMD芯片损坏，请问可能是什么原因导致的？
上电时序
