How can a broken action replay DSI be fixed

If you asking about the action replay not working, this is your answer. As I understand, after a certain amount of time, action replays can stop working for some reason. I have heard from many people that they sometimes do this. Unfortunately you will have to get another action replay.

If the DSi is broken from using the action replay, you probably just glitched it up too much. That's the risk you take when you decide to cheat using a device such as this.