Replacement WD PCB 006-0B43214 is available on HDDZone.com. To swap Western Digital PCB with Board Number 006-0B43214, your should make sure the Board Number on your original pcb is 006-0B43214 too.
WD PCB 006-0B43214 Image:
WD PCB 006-0B43214
WD PCB 006-0B43214 Additional Images:
WD PCB 006-0B43214
WD PCB 006-0B43214 PCB Number
For most of the PCB boards, we also need to swap the BIOS Chip from your original PCB to the replacement PCB, in order to make the PCB compatible with you hard drive.
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Note: Send clear photos of your PCB (both sides) by attachments will make everything easier!