MacBook problem diagnosis: step by step
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MacBook problem diagnosis: step by step
January 29, 20267 minSimpleStore
Systematic diagnosis
MacBooks are complex. Good diagnosis saves hours and avoids unnecessary part replacements.
Common problems
- Won't turn on: check charger, SMC reset, NVRAM reset
- Black screen with sound: test external monitor, check backlight
- Too slow: check storage, test RAM, verify SSD health
- Battery won't charge: test different charger, check port, SMC reset
- Keyboard issues: identify butterfly mechanism (2016-2019), test with external keyboard
Diagnostic tools: Apple Diagnostics, coconutBattery, DriveDx, multimeter.
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