Case notes · Electrical damage · MHD-2025-6614
I Opened It Up to Look at the Heads.
The confession came before the drive did. A thunderstorm over Furze Platt took his street's power out twice inside ten minutes, and once it steadied the WD Blue in his desktop was ticking away, once every second
. A video had convinced him the heads were stuck, and so the cover was off on the kitchen table before ten
. Nothing inside looked wrong, which left him with a guess: either the board or the motor
. It was the open cover that concerned us.
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In everyday terms.
The metal cover on a hard disk is not a lid; it is one wall of a filtered chamber. Within it the heads travel across the platters at a clearance measured in nanometres, nearer than the air of any kitchen is clean enough to permit. Taking that cover off on a worktop rarely destroys a drive on the spot. What it reliably does is double the work ahead: the electrical damage underneath has not moved, and a film of domestic dust now lies across the very surfaces holding the photographs.
What the bench used here.
How a job is handled →| Tool | Why we used it | What it brings |
|---|---|---|
| ACE Lab PC-3000 Express | Put the fault in the electronics, not the mechanism, and identified the dead driver | Reaches the vendor-specific commands that ordinary ATA has no way of issuing |
| PC-3000 Data Extractor | Read the platters slowly, making allowance for surfaces exposed to room air | The PC-3000's imaging module, working under firmware-level control |
| UFS Explorer Professional Recovery | Reassembled the volume and checked the images opened | Reads the awkward filesystems others stumble over: APFS, ReFS, XFS, ZFS, Btrfs |
The lab work.
Deal with the contamination before the fault
The drive arrived exactly as asked: no power since, cover refitted, sealed in a bag. Under magnification the top platter showed what it had gathered — specks and fibres no filter would ever have admitted — and all of it was lifted before the spindle turned once. Spin a contaminated platter and every particle becomes a cutting tool under the head.
Then ask what the surge destroyed
With the surfaces clean, the measurements could be believed. Heads, motor and platters all tested sound, and the damage proved to be electrical: the surge had destroyed the motor driver on the circuit board. A disk unable to reach speed retries once a second, and from outside the case that is indistinguishable from a head fault. His reading was reasonable; the drive was misrepresenting itself.
Restore the board, then read slowly
A donor board of the same revision supplied the electronics, and the ROM was lifted off the burnt original to join it; without that chip a new board works blind. Imaging ran slowly, retries held short, since a platter that has met room air stays suspect however well cleaned. It came through intact.
How the job closed.
Every scanned negative returned — three winters of photographing Furze Platt and the people in it. He came closer to losing them than anyone said at the time. Two copies now; the Torx keys are retired.
More of the jobs we've closed.
More on Electrical damage.
Does any of that match your case?
Nothing needs deciding until the diagnosis is back: switch the device off, send it in, and let the findings settle it.