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// case file · Laptop · Lenovo Yoga 6 · M.2 SSD · chip-off

The board overheated. The flash was fine.

A Lenovo Yoga 6 dropped and broken. It worked briefly, then stopped, and the client found it would run for around forty seconds after being cooled in a fridge. The M.2 SSD was recovered by removing the memory directly from the board.

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// the brief

What arrived, and what it was doing.

The client's description was unusually diagnostic. The laptop worked a couple of times after the fall, then stopped. It heated up very quickly and cut out. Cooling it in a fridge bought around forty seconds of operation before it stopped again.

That behaviour describes a thermal fault precisely. A component damaged by the impact was drawing excessive current and heating rapidly, and the machine was protecting itself by shutting down. Cooling delayed the threshold being reached; it did not fix anything.

The fridge is not a technique. It is a diagnostic accident. Cooling a machine with a shorting component briefly extends the time before thermal shutdown, and it also introduces condensation onto a board that is already damaged. It should not be repeated.

// diagnosis

What had actually failed.

The storage was an M.2 SSD. With the board unable to remain powered for more than seconds at a time, no conventional imaging route was viable — imaging requires sustained, stable operation, and this machine could not provide it.

The flash memory itself was undamaged. The fault was in the board around it, which meant reaching the NAND directly rather than through the failing electronics.

// the work

What was done, and in what order.

StageMethodResult
AssessmentThermal fault confirmed, conventional imaging ruled out The module could not remain powered long enough for any sector-by-sector read to complete. Chip-off route
Chip removalNAND removed from the M.2 module Memory desoldered and read directly on chip-reading equipment, bypassing the failing board entirely. Raw NAND read
ReassemblyController behaviour reversed in software Wear levelling, interleaving and error correction undone to reconstruct the logical image from raw flash. Image assembled
ExtractionFile system rebuilt and data verified Delivered on new media with a verified file list. Full recovery
// outcome

What came back.

Full recovery of the data. The flash was in good condition throughout — the entire fault lay in the board it was mounted on.

Chip-off work is slower than conventional imaging because the controller's arrangement of the data has to be reversed before anything is readable. Raw NAND without that step is noise. It is, however, the route that works when the electronics cannot be kept alive.

// the transferable bit

What generalises from this job.

01 / THERMAL SHUTDOWN IS A REPORT

Not a nuisance

A machine cutting out quickly and repeatedly is protecting itself from a component drawing current it should not. Continued attempts spread the damage.

02 / DO NOT COOL IT AND TRY AGAIN

Condensation on a damaged board

Refrigeration buys seconds and introduces moisture. It is not a recovery technique and it can convert an electrical fault into a corroded one.

03 / CHIP-OFF WORKS WHEN NOTHING ELSE CAN

Given the right equipment

Where a board cannot be kept powered, reading the memory directly bypasses it entirely. The flash is frequently in perfect condition.