Laptop Repair Day

Last week I sold my old laptop to someone off of Craigslist, and only a few hours later he contacted me saying there was a spot on the back that was getting really hot, like burn-your-skin hot. He was understandably upset thinking I had pulled one over on him but relaxed when I offered to meet him the next day. When I did, he showed me a mark that had formed on the back cover and also where the plastic had melted a bit up near the top. Very weird. I had never seen anything like it. I returned his money and he still expressed an interest in buying it if I could figure out and fix whatever was causing this bizarre issue.

Later that night took the screen off to see what was happening behind it. As it turns out, it was the webcam wire. For some reason it was getting hot enough to melt plastic, and very quickly too. Only moments after turning on the laptop the wire got hot enough to become uncomfortable to the touch. Had I left it on much longer it surely would have melted more of plastic. There must have been some kind of short in there, though very weird that it only manifested the day I sold it.

I ordered a new cable which arrived today. The webcam wire is part of the display cable so I had to replace the whole thing which runs from the base of the laptop through the hinge and up to the screen. That meant I had to pretty much completely dissemble the entire laptop, carefully run the wire through the nooks and crannies, then put it all back together again. It took awhile but I got it done and now it's working good as new.

My next project will be installing a backlit keyboard into my current laptop. I've done keyboard replacements before and they've always been pretty simple, but this one is going to be a huge pain as it turns out the newer HP laptop designs do not actually provide access to the keyboard. If you want to replace one you're supposed to replace the entire palmrest area which is quite expensive. They trap the keyboard between the top of the palmrest and a metal plate underneath with the two parts being molded together with plastic rivets, so to get access those rivets have to be either cut off or melted with a soldering iron. And there are a lot of rivets! I am really not looking forward to this.