I've had both problems work my kindle, when it went from being not the right cord that it looked to being cause of the port I had to push the corks in tightly and position it do that the plug was resting on something keeping the edge with the plug in raised of the table till my kid got on it while it was charging and when I pulled out and took it back the pins inside the port had 2 if them bent and all the way to the back after like 3 days off gently poking and digging around in there I got em straitened out but feared I had broke one off (which ended up being only half broken off) I took it apart to look better and see, when I pulled the motherboard out the port ended up staying in the home it sticks out all the pins on the outside are fine it was just like the other guy said didn't have enough solder on it so now I am going to see if I can modify my solder iron to get that small of a solder, if not then guess I'll be buying a finger topped one that way I know I don't end up connecting two of the pins together putting it back in. A trick I found that usually worked even when it was the cord it about half the time made the cord the Kindle didn't like work but popped up saying it was slow charging, when I plugged the cord in I would put either an end of a thin twist tie in the bottom side (the longer side with the little metal hooks to hold it in) and push it in with the plug it, or if the metal wire running through the twist tie worries u I found the end of a small zip tie worked a little better cause it is slanted to make it easier to plug in and no metal wire down the middle of it.