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之前能正常工作的,突然间就无法工作,接电源也点不亮,用万用表测,3.3v引脚和GND短路,5v没有短路 ,接电源芯片微微温热,没有正常运行时温度高,目前情况是这样,求大佬解决一下,是该换芯片,还是解决其他问题
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