So my button stopped working .So I didn’t wanna take the time to send it back. Being me I’m always doing the wrong thing.. They’re two screws on the back. One is under the serial number .But you don’t have to take it all the way y’all just lift it halfway up. The face comes off really easy so with the face off I turned it on and the button work very good just pushing on it. It’s on the board soldered in. There’s no problem with the button. so I knew something else was causing it on the face. there on the face bottom side there is a disc under the button, It is radius on one side and has a # Mark pattern on the bottom . so it has a little tag that holds it in place. Kind a like when you get a model kit and you break off the pieces. I noticed on two buttons tags was already broke, and the buttons work fine so I cut the plus button loose, breaking the tag and trimming it being that it’s round on top that holds it in center. put it back together and had no more problems. I think the tag gets pushed off to the side doesn’t push flat on the button. you have to turn it upside down to put it back together. The button holds the disc in. so far no more problems.