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雷达板在上电工作时，突然LED全灭，USB无法识别，板子断开连接，猜测可能硬件损坏。电源线没问题，插在其他雷达板上可以正常工作。请问问题可能出在哪？如何解决？
再通电，电源灯也不亮了是么？
是的 完全没反应了
那可能硬件坏了。
