Hitachi PCB 0A71256 Failure

PCB failures (Such as Hitachi PCB 0A71256) affect thousands of hard drives every year and often result in permanent data loss. A hard drive may suddenly fail to power on, and a computer may not detect that it is plugged in. Some failed hard drives will also show up in computer BIOS with incorrect brand/model information. PCB failures can also cause physical issues such as read/write head failures, and many PCB failure symptoms overlap with the symptoms of other physical hard drive issues.

Some emails from customers of Hitachi PCB 0A71256 failures are listed below, along with tips for replacing & repairing.

Hitachi PCB 0A71256 Failures:

Q: Advice on Hitachi 1TB HDS721010CLA332 board adaptation

Hello! Hitachi 1TB HDS721010CLA332 Model HDS721010CLA332 Part Number 0F10383 MLC JPT39C PCB Sticker 0A72947 BA3321B Controller Chip 0A71256 No activity at all I’m about to have a board swop/ adaptation done Specs above I haven’t found a clear answer, that if everything matches except the MLC, in this case the just the last three digits are different, which refer to the firmware version As long as the chip is swopped, the MLC difference

Q: Need ROM + NVRAM for HDS721010CLA332

Model: HDS721010CLA332Part number: 0F10383MLC: JPT39CPCB Sticker: 0A72947 BA3321BPCB Revision: 0A90233Controller Chip: 0A71256

Replacement Hitachi PCB 0A71256:

To repair a failure board, the simple way is swapping the failure board with a replacement board. Donor boards on HardDriveParts.com are listed below:

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