Component-Level Repair of Apple MacBook Logic Boards: Common Failure Modes, Diagnostic Workflow and Data Recovery on T2 and Apple Silicon Systems

When a MacBook stops working, the standard service response is often to replace a complete assembly: the logic board, the top case or the display. This technical note describes an alternative practised in independent repair: diagnosing and replacing the individual failed component on the logic board. It summarises the failure modes most often seen in day-to-day bench work on Intel and Apple Silicon MacBook Air and MacBook Pro models, outlines a repeatable diagnostic workflow based on input-current observation, rail measurement and microscope inspection, and explains why, on Macs with the Apple T2 Security Chip or Apple Silicon, repairing the original logic board is in practice the only route to recovering user data after a board failure. It also places component-level repair in the context of the EU right-to-repair framework (Directive (EU) 2024/1799). The note is based on repair practice at Radical Service, an independent Apple repair workshop in Bucharest, Romania (Strada Aristotel Pappia 40, Sector 1), working exclusively on Apple devices since 2014. It also presents Sonda, a free browser-based tool for MacBook board diagnosis published by the workshop. Related pages: MacBook logic board repair · MacBook data recovery Radical Service is an independent business and is not affiliated with Apple Inc. Apple, MacBook and Apple Silicon are trademarks of Apple Inc.