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Dell N5110 Audio I/O board blown SMD transistor

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tariq.sahi

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Hello everyone, i am facing an issue with my laptop it lost its sound hardware. i opened up the laptop and found a blown SMD transistor (transistor because on board number mentions as Q3504 ). Now i cant read the number written on it to determine the type rest of the transistors on this I/O board are K72s probably 2N7002 FETs in So23 packaging. I wanted help if any one has seen this I/O board he will be of real help. 2ndly if i replace it with any other N-channel FET with same Gate drain source pins is there any chance that i will end up blowing my laptop :p thanks in advance for the help i have attached the picture of the part as well Picture2.jpg
 

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