A photographer’s WD My Book gave off a burnt smell and small sparks, then wouldn’t spin up at all — with undelivered wedding photos on it. A power surge had destroyed the drive’s circuit board. The platters were untouched, but you can’t just fit a new board to a WD drive: it’s tied to its own firmware and encryption. We transferred the original ROM chip to a donor board, powered it up safely, and recovered every photo.
A professional photographer sent in a WD My Book external drive after it failed dramatically: a burnt smell and small sparks from the enclosure when powered on, and then nothing — the drive no longer spun up, and the files were completely inaccessible. Swapping cables and power adapters had made no difference. On the drive were wedding photos not yet delivered to the client, so there was real urgency. Powering on a drive that’s sparking is one of the most damaging things you can do, so the right call was made: it was switched off and sent to us rather than tried again.
On the underside of every hard drive is a printed circuit board (PCB) — the electronics that supply power, drive the motor, control the read/write heads and connect the drive to your computer. It also carries the components that protect the drive from electrical spikes. A burnt smell and visible sparks are unmistakable signs that this board, not the mechanics, has failed. A full board and component diagnostic confirmed it: a power surge had burnt the PCB, taking out the TVS diodes (small sacrificial components meant to absorb voltage spikes) and the power regulators behind them. Crucially, the diagnostic also confirmed the platters and heads were undamaged — the data was intact, sitting behind a board that could no longer power the drive.
It’s a common assumption that a dead board can simply be replaced with an identical one. On a modern drive — and a WD My Book in particular — it can’t, for two reasons. First, each board carries a small ROM chip holding firmware and drive-specific ‘adaptive’ data — calibration values unique to that individual drive’s heads and platters. Fit a donor board with the wrong ROM and the drive won’t initialise correctly, and can even harm the heads. Second, WD My Book drives typically encrypt data at the hardware level, with the encryption bound to the drive’s own electronics — so a mismatched board wouldn’t just fail to spin the drive, it wouldn’t be able to make sense of the encrypted data either. A straight PCB swap was never an option here.
The solution is to give the drive a working board that still carries its own identity. We sourced a matching donor PCB from the correct WD My Book model, then carefully desoldered the tiny ROM chip from the original burnt board and transferred it onto the donor. That preserves the drive’s unique firmware, adaptives and the encryption context, so the replacement board behaves exactly as the original would have — only without the burnt, non-functional components. With the ROM in place and the board fitted, power was restored and the drive spun up cleanly for the first time since it failed, without any further stress to the mechanics.
A revived drive that has suffered a serious fault is read once, carefully, and no more. The drive was imaged sector by sector to healthy storage, with the imaging tools set to work around the small number of weak areas rather than labour over them, capturing the full contents in a stable form. Everything after that happened on the image. The photographer’s files were extracted and checked — the RAW captures, high-resolution JPEGs, edited albums and the Lightroom and Photoshop project files — and confirmed to open correctly, a complete recovery. The full set was delivered on a fresh external SSD in time for the client delivery.
Every recovered image was checked for integrity before sign-off, so nothing corrupt or incomplete went back. The advice we passed on applies to any external drive: a power surge can destroy a drive’s electronics in an instant, and a mains spike that takes out a board can just as easily hit the drive you keep your backup on if it’s plugged into the same socket — so a surge-protected supply is worth having, and an irreplaceable job like a wedding shoot should never live on a single drive. And if a drive ever smells burnt or sparks, switch it off at once and don’t power it again: the mechanics are often perfectly fine, and the data recoverable, right up until someone forces power through a failed board one more time.
Board-level diagnostic · matched donor PCB with ROM-chip transfer to preserve firmware, adaptives and hardware encryption · sector imaging with weak-area handling · extraction and integrity-checking of RAW/JPEG and project files. All work in-house at our Belfast lab.
Switch it off and don’t power it again — that’s what turns a recoverable drive into a lost one. Send it in for a free, no-obligation diagnostic. The mechanics are often fine and the data intact. We’ll tell you what can be recovered and put a fixed price in writing before any work starts, and on most jobs it’s no fix, no fee. UK-wide by post, or drop it to us in Belfast.
Usually not. A burnt smell or sparks almost always means the circuit board has failed, most often from a power surge — but the platters and heads inside, where your data lives, are frequently untouched. With a repaired or donor board (and, on WD drives, the original ROM chip transferred across), the drive can be powered up safely and the data recovered. The key is to stop powering it on.
Not on a modern drive. Each board carries a ROM chip with firmware and calibration data unique to that drive, and WD My Book drives also encrypt at hardware level — so a plain board swap won’t work and can even damage the heads. The correct method is to fit a matched donor board and transfer the original ROM chip, which preserves the drive’s identity and encryption.
If the board has failed, forcing power through it can send damage into the motor or heads — turning an electronic fault, which is very recoverable, into mechanical damage, which is far harder. A drive that’s sparked or smells burnt should be switched off and left off until it can be assessed properly.