My Gateway laptop model TB120 hinge is broken. any one knows where i can buy a hinge for this model.

Don't look on Ebay, unless you want to pay 50-60 dollars. I found mine for 39 dollars at www.laptop-lcd-hinge.com. Here is a link:

http://www.laptop-lcd-hinge.com/Gateway/Gateway-TB120.html

They take Paypal, for your safety.
Hope that helps someone.

Mundocorp.com replaced a few things on my cx2620 good service.

This may help and may not. It seems there are lots of people having the same problem you are. The best way to get a replacement seems to buy a cheap junked out Gateway and use the hinge from it. However I would be very careful doing this because the one you buy may not have a good hinge. As many people there are with these issues I would contact Gateway to see if they had a replacement part and would ask to file an official complaint. In addition here is a number to a laptop repair company, they will help you find the most cost effective way to fix your laptop. They are good I have used them for parts before. 1 (800) 999-4409