crwdns2936637:0crwdne2936637:0 crwdns2853008:0crwdne2853008:0 crwdns2918746:0crwdne2918746:0

crwdns2944351:0crwdnd2944351:0Applying Low Voltage After Every Repair (Retina MacBook 2015 Only)crwdnd2944351:0crwdne2944351:0

crwdns2933797:0Jeff Suovanencrwdnd2933797:0crwdne2933797:0

crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Jeff Suovanen

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crwdns2933771:0crwdne2933771:0
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Introduction
The first-generation 12" Retina MacBook has a design quirk that requires connection to low-voltage power after a repair. '''If this step is skipped, permanent logic board damage may result.''' This procedure is not required for 2016 and later models.
Connecting the Retina MacBook to low-voltage power requires a 5W iPhone5-Watt A/C adapter (like the kind that comes with iPhones) and a USB-A to USB-C cable, neither of which is included in the MacBook's original box.