That must be a common problem, because a friend of mine had that happen to him, TWICE. The first time he returned it to Best Buy and they "fixed" the problem. Brought it home and it worked for about 5 min. and did the exact same thing, so he called Klipsch and they were much more helpful. They sent him a new one , and it had a different amp inside when we checked it out. So my guess is that its a problem with the amp inside.