A Western Digital drive went completely silent after an electrical surge — no spin, no sound. Total silence usually means the electronics took the hit and the mechanics are fine. We repaired the board, carried over the drive's unique calibration, and imaged it cleanly.
A surge through the mains left the Western Digital dead: powered up, it did nothing at all — no spin, no click, no detection. It held a small business's documents and accounts, with no current backup. Complete silence after an electrical event is actually an encouraging sign, because it usually points at the circuit board rather than the mechanics, so the drive was set aside rather than being repeatedly powered in the hope it would “come back”.
Every hard drive has a printed circuit board that supplies power and handles communication. It's the part most exposed to an electrical surge, and it's designed with sacrificial components — protection diodes and fuses — that blow to shield the rest of the drive. When they do their job, the board is dead but the motor, heads and platters are untouched, along with the data. The catch is that modern drives store unique, drive-specific calibration in a small ROM chip on the board, so a replacement board won't work until that ROM is carried across — a swap alone does nothing.
The board was examined and the surge damage found in the expected place — a blown protection component that had shorted the surge to ground. The board was repaired and the drive's original ROM — the chip holding its adaptive calibration, matched to that exact head stack — was transferred so the electronics and mechanics matched once more. With that done the drive powered up correctly and was detected.
The drive spun up on the first attempt and imaged cleanly, without a single bad sector — consistent with a purely electronic fault that never touched the platters. Working from the image, the file system was parsed and the documents and accounts extracted with their names and folders intact.
Files were opened across the recovered set to confirm they were whole, then returned on a fresh drive — a full recovery, since the data itself had never been at risk once the electronics were restored. We suggested a surge-protected supply and, as ever, a second copy of the accounts, so the next surge is a shrug rather than a scare.
PCB fault diagnosis and repair · transfer of the drive's adaptive ROM to restore calibration · sector imaging and file-system reconstruction. All work carried out in-house in Belfast.
Send it to us for a free, no-obligation diagnostic. We’ll tell you what can be recovered and put a fixed price in writing before any work starts — and on most jobs, if we can’t get your data back, there’s nothing to pay. Post your device in, or drop it to us by appointment.
Usually, yes — and often fully. Total silence after an electrical event typically means the circuit board absorbed the damage while the mechanics and data are fine. We repair the board, transfer the drive's ROM, and image it.
No — modern drives store unique calibration in a ROM on the board, so a plain board swap won't work and can make things worse. The original ROM has to be transferred to the replacement, which needs the right equipment.
Often, yes — a purely electronic fault with undamaged platters is one of the more straightforward recoveries once the board is repaired. You'll get a written quote after the free diagnostic.