I can't fix it, I'm not a technician and most places you take it to that do game repairs will say they can't fix it because they want you to buy their refurbished or new controllers..but don't despair...you can fix it yourself ..It really just depends on what it is wrong with it. If it seems like it has a mind of it's own...like the analog stick is stuck and just keeps scrolling by itself and you can't control it, then the problem will more likely be that the sensor inside may be off track. If you have dropped it a few times this could throw it off also or you may have broken one of the mounts that hold the sensor in place.This is a very common flaw in the PS3 controller and can be easily fix with with a small Phillip head screwdriver and some black electrical tape(really can use any tape) by opening up the controller (wipe the sensor off with a little light alcohol and a cotton squab just because) and add a small piece of black electric tape behind the sensor to push it up firmly under the buttons. There is already a black spongy backer but I guess after wear and tear it loses it's firmness. There is video instructions on You Tube on how to do this. Watch several of them before or right along with doing it. Now if it's totally dead or won't hold a charge, it could be your battery. Best way to test that is try taking the battery out of another controller (Only if you don't mind taking that risk or maybe you have another one that acting up but still charges)and putting it in there. If that doesn't work, you may have to try sending of to the manufacture for one ..if the still carry them. If you just want to shell out $54 for a new one, try Best Buy online. They don't carry them in the store. Me personally I trust Best Buy for all my electronic needs.But shop around, if I ain't mistaken, Best Buy does price match guaranty..Use the $25 discount if they honor it. If not try Walmart, Kmart or Target online.Unless Game Stop or a local video game repair store have them you may only find them at online stores and you wanna try those that will honor your discount . I hope this was helpful.