Apple Repair Guides
Hands-on, free guides for iPhone, iPad and MacBook board-level diagnosis — from multimeter measurements and the charge IC to power rails and fault isolation, drawn from field experience.
Liquid Spilled on Your MacBook: The First 24 Hours and the Board-Level Diagnostic Order
If water, coffee or tea got into your MacBook, what you do first decides the damage. Instead of panic: the correct first response and the board-level diagnostic order, step by step.
ReadiPhone "No Service / Searching": SIM, Software, or Logic Board?
If your iPhone keeps showing 'No Service' or 'Searching', the causes range from the SIM to the modem area on the logic board. The cheap-to-expensive elimination order, step by step.
ReadiPhone Camera Not Working / Black Screen: Module or Logic Board?
If your iPhone camera shows a black screen, shakes, or freezes the app, the camera module isn't always the culprit. How to make the part-vs-board call systematically.
ReadiPhone Is On but the Screen Is Black: Display, Backlight, or Logic Board?
If your iPhone vibrates and rings but the screen stays dark, there are three suspects: the display, the backlight line, the image line. From the flashlight test to board-level measurement.
ReadMacBook Won't Turn On or Won't Charge: Where to Start Board-Level Diagnosis
If a MacBook won't power on or charge, the battery isn't always at fault. Learn the board-level diagnosis order, from splitting the symptom to reading current draw.
ReadiPhone Water Damage / Liquid Exposure: How to Approach Board-Level Diagnosis
On a liquid-exposed iPhone the fault is rarely a single part — corrosion, short circuits and sensor lines. Here is the board-level diagnosis approach to liquid damage.
ReadiPhone Won't Turn On or Stuck on Logo (Boot Loop): Board-Level Diagnosis
An iPhone that won't power on and one stuck on the logo point to different faults. Learn the board-level diagnosis order, from reading the symptom to the fix.
ReadiPad Won't Charge or Won't Turn On: Where to Start Board-Level Diagnosis
If an iPad won't power on or charge, the battery isn't always at fault. Learn the board-level diagnosis order, from splitting the symptom to measuring the main rail.
ReadHow to Test a Diode with a Multimeter (Diode Mode Guide)
How do you tell a healthy, shorted or open diode apart using a multimeter's diode mode? We explain, step by step, how diode mode is used on the board too.
ReadiPhone Won't Charge: Where to Begin Board-Level Diagnosis?
If an iPhone won't charge, the battery isn't always the cause. From external factors to the on-board power-input chain — the logical order of board-level diagnosis.
ReadGo beyond the guides
An 8-phase × 14-day processor-level program. All of Phase 1 (14 days) is free — no card required.
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