so at my band house a few of our friends decided to play with our equipment and somehow one of our pedal power supplies got dropped on a concrete floor and now it only works sometimes. when it dosnt i can jiggle the wire where it connects to the ac adapter. I tried opening the tihng up since it has 2 4mm bolts on it, however i cant get the case to pop apart. it almost looks like its a solid piece of plastic. i figure im going to have to buy another, or at least have them buy another, but i still want to try to repair this one.

its a boss psa-120t if that helps at all.