Traditional multimeters leave you probing blind. The S-UEM3 PRO already knows the correct reference values for every supported model — it just tells you where yours differs.
USB-C Power Boost Faults (5V–20V) Instantly pinpoint fault locations in the USB-C power delivery path. Connect the right cable and the tester flags the deviation immediately — no guesswork, no manual lookup.
No-Display & Camera Malfunctions Connect via the EDP display connector to diagnose black screen or dead camera issues at the logic board level. Supports both 48-pin (T1/T2/M1) and 38-pin (M2/M3/M4) connectors.
Backlight Circuit Diagnostics Use the JP900 connector interface to rapidly isolate backlight faults on M2, M3, and M4 models — one of the most time-consuming faults to trace manually.
Pre-loaded Reference Values Normal connector values for every MacBook model from 2016 to 2025 are factory-written into the host unit. Zero calibration. Zero lookup tables. Select the model, plug in, read the result.
Diagnosis Output
Always unambiguous.
Results are never vague. The LED touchscreen explicitly shows one of four states so any technician knows exactly what to do next.
NORMALHIGHLOWSHORT CIRCUIT
Compatibility
One tester. Nine years of MacBooks.
Every MacBook Air and MacBook Pro motherboard in your queue — from the first Intel-era T1 board to the latest Apple Silicon M4 — is covered out of the box.
