Perhaps it's time to not buy the 360 anymore, all they do is break down anyways. Plus they lose all their good exclusive games, to where it only has 3-5 good franchises anymore. I don't like Mass Effect 2 all that much, but it was a nail to the coffin for 360 fans because they used that as a, nullifier to Uncharted. Just saying, don't keep wasting money. You should only have to buy one system from a single company, anymore than that in which you "have to", and you know it's not worth it. My 360 and 2 PS3's still work, but my 360 gets hardly any playtime so it doesn't get much chance to die. My Slim and fatty fun 24/7 sometimes for a week or two, and run like dreams. I wouldn't dare do that to my 360, plus 360 only has exclusives that are "good" that are FPS games, and I hate those more than anything. Games like Gears, and Halo I find disguisting.
But if you have to have a new one, than I feel sorry for you. MS doesn't deserve people buying their 3rd, and 4th systems, which I know a lot of people who've had too. I just am shocked tons of people support their bad quality. I am a computer guy, and I don't tolerate it. If my expensive ass PC went to shit, or my PS3, I'd be royaly pissed off, and I have no company loyalty to any companies, but just to myself.
But for you, I hope it somehow works, people shouldn't really have to waste money like this.