Fix your frayed Apple MagSafe or Lightning cables with Sugru Moldable Glue [u] | AppleInsider
Repair : Apple MacBook MagSafe Charger Power Cord : 5 Steps (with Pictures) - Instructables
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Repairing A Macbook Charger… With A Pistachio Nut | Hackaday
How to repair an Apple MacBook power supply (MagSafe) - YouTube
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Building a 12V DC MagSafe Charger | Big Mess o' Wires
Amazon.com: Kastar New Cable "T-Tip" AC Power Adapter DC Repair Cable Cord " T " Connector Replacement for 45W 60W 85W MAC MacBook Pro Retina Pro (for Magsaf2 only) : Electronics
If your MagSafe cable or power adapter isn't working - Apple Support