TPA3110D2双通道，按SLOS528D/TPA3110D2资料图37典型连接，上电短瞬接通后，又关闭，检测SD/FAULT脚的电位，上电瞬间为高，而后不到1秒变低，输出无声。但同样的有些电路板就正常。请问是何原因？怎样解决？
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