Board-level repair reference

Electronics repair,
component level.

Voltage tables, diode mode readings, schematics and diagnostic guides for MacBook logic boards, GPUs, consoles, laptops, and more. Everything a technician needs — free, no account required.

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Voltage rails & diode mode readings
Schematics & boardview availability
MacBook · GPU · Console · Laptop
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Try a board number (e.g. 820-3476) — or use the board lookup →
820
Apple Logic Boards
MacBook · iMac · Mac Mini
13 guides
Apple Logic Boards
MacBook Pro 13-inch M1 A2338 — Logic Board Repair
Board-level repair guide for MacBook Pro 13-inch M1 A2338. PP3V3_S5, PP5V_S5, SMC_BC_ACOK, PPBUS_G3H voltage measurement…
Apple Logic Boards
MacBook Pro 16-inch M1 Pro A2485 — Logic Board Repair
Board-level repair guide for MacBook Pro 16-inch M1 Pro A2485. PP3V3_S5, PP5V_S5, SMC_BC_ACOK, PPBUS_G3H voltage measure…
Apple Logic Boards
MacBook Pro 16-inch M2 Max A2780 — Logic Board Repair
Board-level repair guide for MacBook Pro 16-inch M2 Max A2780. PP3V3_S5, PP5V_S5, SMC_BC_ACOK, PPBUS_G3H voltage measure…
Apple Logic Boards
MacBook Pro M3 Max A2991 No Power Board Repair — Apple Silicon Logic Board
Board-level repair guide for MacBook Pro M3 Max A2991. Fix no power on Apple M3 Max logic boards — USB-C, PPBUS_G3H and …
Apple Logic Boards
MacBook Pro 14-inch M2 Pro A2779 No Power Repair — Apple Silicon Logic Board
Board-level repair guide for MacBook Pro 14-inch M2 Pro A2779. Fix no power on Apple M2 Pro logic boards — USB-C PD, PPB…
Apple Logic Boards
MacBook Pro 14-inch M1 Pro A2442 No Power Repair — Logic Board 820-02098
820-02098
Board-level repair guide for MacBook Pro 14-inch M1 Pro A2442 (820-02098). Diagnose no power on Apple M1 Pro boards — US…
Apple Logic Boards
MacBook Air M3 A3114 No Power Board Repair — Apple Silicon 15-inch
Board-level repair guide for MacBook Air M3 A3114 (15-inch). Fix no power on Apple M3 logic boards — USB-C PD, standby r…
Apple Logic Boards
MacBook Air M2 A2681 No Power Board Repair — Apple Silicon, USB-C PD
Board-level repair guide for MacBook Air M2 A2681. Fix no power on Apple M2 logic boards — USB-C power delivery faults, …
Apple Logic Boards
MacBook Air M1 A2337 No Power Board Repair — Apple Silicon Logic Board (820-02016)
820-02016
Board-level repair guide for MacBook Air M1 A2337 (820-02016). Diagnose no power on Apple Silicon logic boards — PPBUS_G…
Apple Logic Boards
MacBook Air A1932 Not Charging Repair — CD3215 USB-C, No Power (820-01521)
820-01521
Board-level repair guide for MacBook Air A1932 2018 (820-01521). Fix no power and not charging via CD3215 USB-C PD contr…
Apple Logic Boards
MacBook Air A1466 No Power Repair — PPBUS_G3H Short, ISL6259, Liquid Damage (820-3437)
820-3437
Board-level repair guide for MacBook Air A1466 (820-3437-B). Diagnose PPBUS_G3H shorts, ISL6259 charging faults and liqu…
Apple Logic Boards
MacBook Pro 820-3209-A No Power Repair — NVIDIA GPU, SMC, PPBUS (A1278 / A1286)
820-3209
Board-level repair guide for MacBook Pro 820-3209-A (A1278, A1286, 2011–2012). Fix no power, NVIDIA GPU failures, SMC fa…
Apple Logic Boards
MacBook Pro A1502 No Power Repair — PPBUS_G3H, ISL6259, LP8550 Backlight (820-3476 / 820-4924)
820-3476
Board-level repair guide for MacBook Pro A1502 (820-3476, 820-4924). Diagnose no power with PPBUS_G3H voltage map, ISL62…
Technical Resources

Repair Knowledge Base

Repair glossary, real-world case studies with full diagnostic process — updated continuously.

Got the right tools for Level 3?

Board-level repair requires precise equipment: hot air stations, oscilloscopes, DC power supplies. See the curated list used in these guides.

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Repair Case Studies

1 documented board-level repairs — full diagnostic process, measurements and fix.

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Latest articles

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BoardView Software: OpenBoardView and Alternatives
Technical review of BoardView software tools: OpenBoardView, Altium Viewer, KiCAD alternatives. Board-level re…
Hot Air Soldering Station: Buying Guide
Technical buying guide for hot air soldering stations. Temperature accuracy, airflow control, nozzle compatibi…
What is a Ground Plane and Why It Matters for Measurements
Learn how ground planes affect voltage measurements, signal integrity, and repair diagnostics. Essential knowl…
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