Use this guide to replace the logic board in your Retina MacBook 2015.
Use this guide to replace the logic board in your Retina MacBook 2015. The logic board includes a flash storage chip containing all of your personal data, so make sure it's backed up (if possible) before attempting this repair.
'''To avoid logic board damage''', when your MacBook repair is complete ''but before powering it on'', [https://www.ifixit.com/Guide/Applying+Low+Voltage+After+Every+Repair+%28Retina+MacBook+2015+Only%29/107711|connect it to low-voltage power] using a 5-Watt iPhone charger and a USB-C to USB-A cable. These accessories are not included with your MacBook, so make sure you have them ready before you begin.
To reassemble your device, follow these instructions in reverse order.