Excellent guide with great pictures! I recently fixed one I found put to the road on my way home, but now I'm nervous about trying it out on my Macbook Pro 13. I originally tested it on a Macbook, but it started sparking, and the Macbook shut off. I realized the solder on my white wire had become disconnected and have since resoldered it more securely in place. Any suggestions on how to safely test this? Do Macbooks have built in protection for faulty chargers? or should I somehow use a voltmeter or something else? Thanks!
(Also if you're having issues fitting the housing over your bulky solder job, a small file is great to slim it down. Just test the strength of your solder again after)