Fix USB dual port car charger (solder connector)
After using a USB dual port car charger I got off eBay for a few weeks, it would stop turning on unless I removed it and plugged it back in a few times. I opened up the case and found out it's because the ground pin isn't actually soldered onto the PCB, but rather just held on by pressure. Once I soldered it together, it's been working great since.
If you want to buy one, check here:
http://goo.gl/Fbucak
Make sure to buy the one with the clear front like in the video, I found the other cheap ones aren't rated for enough current and burn out quickly.