Pattern to record: The connector does not seat fully or one orientation behaves differently.

Use the correct Mac power design

MacBook Pro charging requirements vary by model and workload. Compare the supported adapter and cable with the installed configuration, and note whether the problem is confined to one charging port or appears on every supported path. One possible explanation is that packed debris or conductive residue prevents reliable contact.

Power and data precautions

Stop high-load testing if the charger connection or board area becomes unusually hot. Liquid cleaner left in a live port can create further damage.

Model-specific checks

1. Compare supported ports, charger profiles, battery condition and board current behaviour.
2. Inspect the port without metal probes and compare a clean known-good cable.

Repair and startup verification

If the checks support this cause, clean safely or replace the damaged port assembly and verify every contact. Verification should cover all charging ports, full-power operation, battery transition, sleep and shutdown.

For an assessment of your Apple-silicon MacBook Pro, contact AEPC in Burswood or call 027 908 8880. Provide the model and the conditions that reproduce this problem. Workshop visits are by appointment.