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目前是，过热芯片周围所有管脚电平和不过热芯片对比，没差异，过热芯片就是上电就削波发热，现在不知道原因？尝试将输入全部接地拉低，芯片不发热，但是削波信号依然输出低电平，输出端没有接喇叭，PVDD50V，GVDD和VDD12V，不知道为什么还是会削波
目前已经将输入和输出全部断了，依然有削波现象，削波指示管脚输出为低电平。请问是为什么？
