Need help with identifying SMD component on overvolted WD RED

I'm looking for some assistance identifying a damaged SMD (surface-mount device) component on the PCB of a Western Digital WD Red hard drive that was accidentally subjected to an overvoltage. I'm hoping someone with experience repairing WD drive electronics or access to a similar board can help me determine what the failed component is and whether the drive has a reasonable chance of being repaired.

The problem occurred after I mistakenly connected the hard drive using the wrong modular power cable from a different power supply. Unfortunately, I didn't realize the cables were wired differently, and as soon as I powered on the system, the drive failed immediately. There was no spinning, no vibration, and no unusual sounds from the drive after the incident. I disconnected the power right away, but the drive has remained completely unresponsive ever since.

After removing the drive from the computer, I inspected the PCB carefully. I noticed that one small SMD component near the power input appears to be burned, cracked, or otherwise physically damaged. The damage is severe enough that any identifying markings have been destroyed, making it impossible for me to determine what the original component was. Aside from that visibly damaged part, I don't see any other obvious signs of burning or broken traces, although I understand that additional damage could exist beneath an IC or elsewhere on the board.

I've done some reading about Western Digital hard drive PCB failures and learned that drives often include protective components such as TVS diodes, zero-ohm resistors, ferrite beads, fuses, and voltage regulation circuitry. From what I understand, these components are intended to absorb or isolate electrical faults before they reach more sensitive parts of the drive. If that's what happened here, I'm hoping the failed component did its job and prevented more serious damage to the controller or the head preamplifier inside the drive.

At this stage, my biggest challenge is identifying the damaged SMD component. Since the markings are gone, I don't know whether it's a TVS diode, a fuse, a resistor, a ferrite bead, or another protective device. Without knowing its function or specifications, I'm hesitant to remove or replace it because I don't want to risk causing further damage or masking another fault.

I plan to upload several high-resolution photos of both sides of the PCB, including close-up images of the damaged area, the controller ICs, and the PCB identification numbers. I'll also include the complete model number, PCB number, DCM code, and any other labels printed on the drive. If someone has an identical WD Red drive or a spare PCB, even a clear photograph of the same area would be incredibly helpful for comparison. Sometimes simply seeing what component belongs in that location is enough to identify it.

If the damaged part turns out to be a TVS diode or another sacrificial protection component, I'd appreciate advice on the proper replacement part and any recommended testing before reconnecting power. I'd also like to know whether additional checks should be performed, such as measuring resistance on the 5V and 12V power rails, checking for short circuits, or testing nearby components with a multimeter before installing a replacement.

I've also read that replacing the PCB itself is rarely as simple as installing another board. Modern WD Red drives typically store unique adaptive calibration information in a ROM or EEPROM chip that is matched to the drive's heads and media. If I end up needing a donor PCB, I understand that the ROM chip usually has to be transferred from the original board to the replacement. If anyone has advice on how difficult this process is, what tools are recommended, or whether there are exceptions for certain WD Red models, I'd appreciate hearing about your experience.

The data stored on this drive is important to me. While I do have backups of some files, there are still documents and photos that I'd very much like to recover if possible. Because of that, I'm trying to approach this repair carefully rather than replacing random components and hoping for the best. If the failure is limited to the PCB, I would be comfortable replacing a damaged protection component or sourcing a compatible donor board. However, if the overvoltage likely damaged the internal head preamplifier or other components inside the sealed drive, I'd like to know that before spending additional time and money on the repair.

If anyone has repaired a WD Red drive after an overvoltage event, I'd really appreciate hearing about your experience. Specifically, I'd be grateful for help identifying the damaged SMD component, recommendations for replacement parts, guidance on testing the PCB safely, or suggestions for additional diagnostic steps before applying power again. Any photos, schematics, board diagrams, or repair tips would also be extremely valuable.

Thank you in advance to everyone who takes the time to read this and offer advice. I truly appreciate any guidance that can help me identify the damaged component and determine the safest path toward repairing the drive or recovering the data.