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Causes of Failure After Buck Converter Repair in Laptop

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    Causes of Failure After Buck Converter Repair in Laptop

    Dear members,

    Recently, I watched this nice video:
    www.youtube.com/watch?v=XBAn2Ck8GeE

    I have experienced such a failure many times in laptops.
    He replaced the Mosfets and the controller of a buck-converter in one go. But then after powering the laptop on, the new Mosfets burned again.

    What are the popular causes of the repair failure in this video?

    note: after removing the coil, he measured that the circuit is not shorted after the coil. only the circuit before the coil was shorted.

    Thanks
    Last edited by caspian; 03-28-2022, 02:06 PM.
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