Repairing your Xbox 360 Controller yourself, is it possible? of course it's possible, a little discipline, accompanied by a controlled approach and yes, you can save heaps of money and get your Xbox 360 controller back on line fast with little or no expense, just follow along.
Firstly, make sure that it is no longer under warranty, if it is just return it to the store you purchased it from and let them fix it. If it is out of warranty, and you return it for repair, they will charge you heaps, so better look into repairing it yourself, it really is no big deal.
If your buttons are sticking or even dead there is a good chance that you can repair it yourself. You only need basic tools such as a small Philips head screwdriver and a long nose pair of pliers.
Start by removing the 7 screws underneath that hold the controller together, turn it over and remove the top cover. Carefully lift out all the buttons and rubber pads. To remember how to reassemble correctly it is a good idea to make a drawing of the layout of the colors, etc.
Carefully clean everything in rubbing alcohol using cotton swabs and soft lint-free cloth. Make sure buttons and pads are very clean.
When you are sure that everything is clean and dry, you can begin replacing the buttons, pay attention as to how they seat, they will only go in one way, do not force. Replace pads, re-install cover and screws. Make sure all buttons move freely with no stickiness. Power it up and see how your repair worked.
Xbox 360 repairs are easy if you are careful, if you do not possess basic technical skills, better enlist a buddy, who has them.
As you no doubt will be getting a lot of use out of your Xbox 360 it's probably a good idea to invest in a repair manual, it will save you loads of money in the long run and when you become proficient at repairing them, you may be able to fix them for your friends for a small fee.