I have the same problem with the right hinge. I won't get an Acer again. While the computer works fine, I am disappointed that I can't even find a replacement part for this problem. I do have an IT person in the family who can do all work that I need on any of our computers, which saves a bundle.
I am actually looking to getting a Toshiba to replace the Acer 9410. I don't really need a 17" monitor.
If anyone knows where to even get a top cover for the 9410 I would appreciate hearing. You can e-mail me at gyingst@gmail.com
Thanks