After renovating my aiwa hs-px101 i took it down my local to show it off . most were amazed ! compared to mp3 it isn't hard,but anyway i digress .. The long and the short of it is that it got dropped on the pub floor. After putting all the springs back and getting it working again,it sounds and works perfectly again until i touch it ,then it switches off ??  Its like an electrical short but not ! if that makes sense 1!??