A customer who lives on the Fountainbridge side of Tollcross dropped off two DualSense controllers last winter with the same complaint. The left stick on one would nudge the character backwards in the menus; the right stick on the other would slide the camera round in single-player when his hands were on the table. Both pads were less than eighteen months old. Both had seen honest living-room use rather than tournament hours. Neither had been opened. On the bench they told the same story that we see every week in console repair — wear on the potentiometers inside the stick modules, exactly where Sony chose to put the cheapest serviceable part of a £70 controller.
Stick drift is one of the few console faults where the question is less “can it be fixed” and more “which fix will actually last”. The honest answer is not the same for every DualSense that comes through the workshop, and the quick cleans the internet recommends are only worth doing when the controller has been drifting for days rather than months. This is a bench-level walk-through of what we see on DualSense modules, written for the Tollcross customers who would rather know what is going on inside their controller before they book it in.
What Stick Drift Actually Is (And What It Is Not)
A DualSense thumbstick is a plastic cap sitting on top of two tiny potentiometers — one that reads the stick’s horizontal angle, one that reads the vertical angle. Each potentiometer is a strip of resistive material with a metal wiper sliding across it, and the PS5 reads the voltage at the wiper to decide where the stick is pointing. When the sticks are centred the console expects a specific voltage from each wiper, and “drift” is what happens when that resting voltage is no longer the one the firmware expects.
What drift looks like at your end: the character moves on its own in menus, the aim circle creeps when both your thumbs are off the pad, or a direction stops registering properly during a game. What drift is not is a bump of the stick while a game is actually loading, a one-off ghost input after a cold boot, or a camera that is reacting to a game’s own motion assist. We see a surprising number of Tollcross customers worried about drift when the real cause is a game’s own deadzone or sensitivity setting — so the first bench check we do before taking a screwdriver anywhere near the pad is a drift test on the PlayStation itself, in the controller test screen, with the pad left completely alone on a flat table for a full minute.
Why DualSense Controllers Drift So Often
Sony’s DualSense modules use the same analogue potentiometer design that has been in game controllers since the original DualShock, and the physics of that design have not changed. The wiper rubs on the resistive strip every time you push the stick, and over tens of thousands of pushes the strip wears, the contact becomes noisy, and the resting voltage shifts. Dust and skin oils that get past the stick’s rubber boot sit on top of the wear track and make the noise worse. Neither Sony nor Microsoft nor Nintendo use Hall-effect sensors (which have no moving contact to wear) in their first-party controllers, because the modules are more expensive to manufacture.
On the bench we open DualSense pads and see three common states. One, early wear: the resting voltage has drifted by a small amount but the stick still responds cleanly in all four directions — a candidate for a clean. Two, mid-life wear: one axis is noisy enough that the console reads movement when there is none, but the stick is otherwise mechanically fine — a candidate for a module replacement. Three, mechanical damage: a bent potentiometer leg, a cracked plastic housing from a drop, or a snapped stick cap — a candidate for microsoldering work on the board as well as a module swap. The right fix depends entirely on which of those states we find when the pad is open.
The Cleans That Sometimes Buy You Time
Before we recommend any work on a controller we try the thing you can also try at home. Blow compressed air into the base of each stick from a few angles while rotating the stick in a full circle, and recalibrate the controller through Settings → Accessories → Controllers → Adjust Analogue Stick Input Deadzone. This genuinely works on controllers in state one — early wear with a little dust — and it has bought some Tollcross customers an extra six months of life out of a controller that was only lightly drifting.
What we see fail at home is the next step up — the isopropyl-alcohol-under-the-boot trick that YouTube loves. On a controller that is only lightly drifting it can work; on a controller in state two it only buys days, because the resistive strip itself is worn rather than dirty. We also see customers pry the stick cap off aggressively and bend the stick housing, which turns a module swap into a module swap plus a short board rework. If the compressed air and the on-console recalibration do not hold for more than a week or two, the honest conclusion is that the module itself is worn and no amount of cleaning will fix it.
When Replacement Sticks Are the Honest Answer
A DualSense stick module is designed to be replaced, and on a controller in state two that is the work that actually lasts. On the bench the job is four screws, a clipped-in battery, a ribbon cable to lift, and a desolder-resolder on the fourteen pins of each module. The replacement modules come in matched left-and-right pairs and we fit them both at the same time, because a controller that has worn one stick down over eighteen months has almost always worn the other one down by the same amount — and nobody wants to be back on the bench in six weeks for the second module.
Where we see this work pay for itself is on controllers that are otherwise mechanically sound — the triggers, the bumpers, the touchpad, the haptics and the battery are all still fine, so replacing two tiny modules keeps the rest of a working £70 pad in service. Where it does not pay for itself is on a controller where a drop has cracked the housing, the triggers are mushy from heavy use, or the battery no longer holds charge — at that point a replacement DualSense is the honest advice and we will say so, even though we lose the repair. The Marchmont PS5 disc-eject guide covers the same honesty rule from the console side.
Hall-Effect Replacement Sticks: Worth It?
The question Tollcross customers ask us most often, right after “can you fix it”, is whether they should pay for Hall-effect replacement modules instead of the standard potentiometer ones. Hall-effect modules use a magnet and a magnetic sensor instead of a wiper and a resistive strip, which means they have no moving contact to wear, and in theory they should never drift from wear.
In practice we fit them when a customer asks for them specifically and the budget supports it, and we are honest that the data on their real-world lifespan in a DualSense housing is still being written. The modules are good, the soldering job is the same, and the pad feels identical to the owner on day one. Where we see them earn their keep is on heavy-use controllers — the home that runs five or six hours of Fortnite, Rocket League or Call of Duty most evenings — because those are the pads that would otherwise be back on the bench in eighteen months. On a lighter household rotation we are comfortable fitting standard modules and expecting them to last a similar run.
What a Drift Repair Looks Like on the Bench
A typical Tollcross DualSense drift repair runs like this. The pad goes on the bench and the stick axes are read live, both at rest and under rotation, so we can tell whether we are looking at state one, two or three before anything is unscrewed. If it is state one, we clean, recalibrate on the PS5 and send it home with no module work and no bill for parts, with the honest caveat that the fix may not hold if the resistive strip is already worn under the dust.
If it is state two we open the pad, lift the ribbon, discharge the capacitors, desolder both stick modules together, drop in the matched replacement pair, resolder, reassemble and re-run the live-read test to confirm the resting voltage is where the firmware expects it. If it is state three we add the housing or trigger rework to the same visit, because opening the pad twice costs the owner twice. For PS5 consoles themselves — HDMI port, disc drive, cooling — the Xbox power-on Cockenzie guide covers the equivalent console-side triage from the other side of the gaming aisle.
Collecting Controllers Across Tollcross
Tollcross runs from the top of Lothian Road down through the junction and out along the West End of Lauriston Place and the East End of Fountainbridge, and the drive to our Parkhead Drive workshop takes under ten minutes outside of commuter hours. Most controller drop-offs are a two-minute conversation across the counter — we take the pad, run the bench test, phone back the same afternoon with what we are looking at, and in most cases the controller is ready for collection a day or two later. Where it is awkward to carry a pair of controllers across town we collect from Tollcross, Fountainbridge, Bruntsfield, Haymarket and the surrounding streets by arrangement.
If you are not sure whether what you are seeing is drift or a game’s own deadzone, bring the pad in and we will do the bench read before quoting anything. The Tollcross console repair page covers the area specifics, and the Nintendo Switch charging guide is useful if the household also has a Switch Joy-Con that is drifting on the same shelf. For anything with a cracked housing or liquid damage the microsoldering service page covers the board-level work.
If the drift is bad enough that you have stopped using the pad, book a slot or get in touch and we will come back the same day with whether it is a clean, a module swap or an honest “this one has had its run”.
Last updated: 23 October 2026