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Need new/replacement PCB for My Book Essential 3TB

Does anyone know where I can get a replacement printed circuit board for my external hdd? My friend plugged in a wrong power coard and it smoked a diode or two on the PCB.  Images attached.

If you search the posts by fzabkar he has helped people bypass the burned diode. Or this might help  https://wdc.custhelp.com/app/answers/detail/a_id/70/session/L3RpbWUvMTM5MDMyNjIwNS9zaWQvZVBrTU9YS2w%3D

Joe

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