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PCB burnt is another most common WD hdd failures and many data recovery engineers are trying to find a donor PCB from a donor drive and swap the PCB directly. Unfortunately a simple direct PCB mostly doesn’t work for PCB burnt WD drives. It’s because of the poor ROM compatibility of the WD PCB, as for the ROM on each WD drive, even if the drive has the same model and you may think you have already found one donor drive and after you swap the PCB, you may still fail to restore the patient drive and the drive is still undetected. Read more