Sticky play button (by 3 users)

If you mean the push button got push down into the case then youll have to probably replace the case as these buttons are most of the time attached right to the outer housing and are not available by them selfs. if you wanna take a chance then open the unit and take out the pcb chassis and see if you can push back the s,mmall button but its something I would not recommend as there are lots of problems you can cause if you dont know the right procedture on disassembly.