The bigger issue is what do you do about it; where do you find out how to fix Xbox 360 problems? Do you call in the Microsoft engineers, and pay their fees, or do you just throw your console away> Either solution is painful.
There are however, Xbox 360 problems solutions to be had, if you know where to look. Xbox 360 repair guides abound on the Internet, the question is which one would suit you best? To best answer that question, you should read reviews and make your judgement based on those.