I've looked at the construction of the hinges, and it appears the way the pin is pressed into the lower block of the hinge is a poor design and comes loose, creating play. Changing the hinges is a pain, but it can be done without doing any damage if you're careful. You'll need to remove the back cover, then front bezel from the lid. I prefer to remove them before removing the lid because it's well supported when attached to the laptop, but you can do it in any order. Once the plastics are removed it's just a matter of removing the lid from the lower chassis, then replacing each of the hinges. It's not my favorite thing to do, but it can be done safely, just be careful and don't be in a hurry, it's easy to crack an lcd when removing the lid plastics that are fastened with adhesive and clips.
If you do happen to break something, I have all the plastics, even the screens, but I don't think it's likely.
I've also been looking into ways to fix the hinges, including drilling and installing a pin to secure the press-fit in the lower block that comes loose. I haven't had time to give this a practical test, and being the parts are so cheap it's not really something that would be worth all the effort. It would be nice if it could be modded without removing the hinge, but if they need to be removed to fix, then the whole point is moot.
I'm often asked if I have a pair of hinges I could sell, but the amount of work it takes to remove them would make it cost prohibitive to sell used ones, even if I had a unit with a bad screen and good hinges, and I'd certainly not remove good hinges from a good screen, especially when you can buy them new for $20 shipped from china. I inquired about buying them in bulk just so I'd have them on hand when someone asked, but the chinese sellers seem to have no concept of combined shipping, and wanted $200 for ten pairs even if shipped together. If I can find someone to sell me a case of them at a good price, then I'll be able to offer them in the forum so members won't have to wait for weeks to get them shipped from china.
As for the touchpad, if you want me to send you one, send me a PM and we can work out the details.
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