Dj Eclipse.I personally recommend not opening the unit due to all of the ribbon cables that have to be pulled off.If your not careful you could damage a section of the board.Here is a # to Hermes in Mexico that you can contact for a Service Center near you. 011525-55-5472111 They are experienced repair technicians that are qualified to do the job.It's sounds like the tact switch needs to be removed and replaced on the main PCB.