MagSafe 3 and Thunderbolt 4 charging faults
The 16-inch M2 has the highest sustained power requirements of its generation, so charging faults tend to present under load before they present at idle. No MagSafe LED activity, intermittent charging, a 'plugged in, not charging' state, or a machine that discharges during heavy work each point somewhere different — the connector, the port, the charging circuit, or the board. Test all charging paths with a known-good cable and adapter before submitting intake.
