Workshop · Quality control
Two phases, fifteen inspection stations, more than fifty checkpoints — verified one by one — on the exact Mac model. Not a single defect is tolerated.
A MacBook screen is not just a panel. It is an assembly of some fifteen parts — polarizer, T-Con board, hinges, flex cables, camera, ambient light sensor — that must all be flawless for the image, the opening and the sensors to behave exactly as they did originally.
Before a screen is fitted to your Mac, it goes through a two-stage protocol here. First a thorough inspection at assembly, screen off: we check every part, every bond, every screw. Then a battery of functional tests, screen powered on and connected to a real logic board of the correct model: light, colours, pixels, flicker, camera, sensors.
Here, station by station, is everything we check — with the photos of our checkpoints.
Part by part, before any power-up. We hunt down the slightest bonding, alignment, tightening or cosmetic defect.
The polarizing film governs contrast and sharpness. The slightest trapped bubble or dust becomes visible in use.
The brain of the video signal. We inspect it like an electronic board: solder joints, corrosion, repair marks.
The glass bezel frames the panel. A misalignment shows immediately once the Mac is open.
It provides light sealing and the screen's rest when closed. Its height is checked to a tenth of a millimetre.
The visible part when closed. Appearance, corners, edges and logo must be flawless.
These spring flex cables guide the flex cables through the hinge. Their geometry must be perfect.
The most stressed mechanical part of the screen. The slightest play causes premature wear and returns. We only accept original hinges, engraved with their Apple QR code.
They control closing and sleep. Poorly placed, they prevent a clean close.
The screen is connected to a logic board and chassis of the exact model, then booted into macOS. We measure and inspect everything that only shows when powered.
The link between the panel and the logic board. We hunt down the notorious “Dustgate” and any retention defect.
The screwing area that ties the panel and spring flex to the chassis.
Tested in ambient light controlled at 150 LUX, on a black then white background, to flush out the slightest light leak.
The heart of the image test. Flicker, invisible to the naked eye, is detected with our dedicated INSPECT software; the firmware is read with SteelLite.
On a fully white screen, luminance meter in hand. The minimum threshold depends on the model — a Pro must push harder than an Air.
The test that eliminates the notorious “too green” screens. Measured with a colorimeter probe (DisplayCAL), ambient light sensor and True Tone on, in calibrated ambient light 6000–7000 K / 150 LUX.
The secondary functions, often neglected elsewhere. We test them systematically.
Final acceptance
If even one of the criteria below is not met, the screen goes back to the workshop or is set aside. No averaging, no exception.
All hardware and software tests pass.
No visual or mechanical defect detected.
Camera, ambient light sensor, brightness, backlight and image stability fully functional.
Housing and hinges meet quality requirements.
Workshop sign-off verdict: PASS — or nothing.
Protocol applied to MacBook 13″, 15″ and 16″ screens from model years 2016 to 2020 (A1706/A1708, A1989/A2159/A2289/A2251, A1932, A2179, A2337, A2338, A1707, A1990, A2141). This protocol evolves: current version updated in 2026.
By continuing to browse this site, you accept the use of cookies to improve your experience and provide tailored content. For more information, see our privacy policy.
