This is my first time posting here
About 4 months ago my laptop AC adapter started having problems - I'd had some problems beforehand with the laptop overheating and turning off, and then I started noticing it was difficult to pull the ac adapter plug out of the back of the laptop, or that I had to push it in and fiddle with it to get the laptop to realise it was actually plugged in. On closer examination I noticed the yellow ring of plastic around the metal plug of the ac adapter (the part that plugs into the back of the laptop), was tinged and burned, and the plastic of the ring was getting deformed. Then one day, the metal pin of the plug got stuck in the back of the laptop, and separated from the cable.
So, I decided to get the pin out of the back, and bought a new ac adapter. It seems to be working okay, but to my complete horror, the plastic on the inside of the pin looks a little burnt / charred already. I really don't know what to do.. I'm trying to keep the laptop unplugged as much as possible, and people are just telling me to wait and see until it gets to winter (because the summers here are very hot) - but I really don't want the pin to break again! What can I do, and what's causing this?