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DM368开发板无法显示(TMDXEVM368 - Dm368 432 Mhz Evm)

Other Parts Discussed in Thread: TMDXEVM368

我去年买了一套DM368开发板(TMDXEVM368 - Dm368 432 Mhz Evm)。最近开机显示屏没有任何信息,串口也不能使用,请问各位这可能是啥原因?谢谢