I just acquired this 1957 Wurlitzer 2104 jukebox. The turntable is engaged and there is a record in the turntable. When i plug the machine in and turn it on the turntable turns with the record. If i move the tone arm all the way down were the unit should reset and take the record back down to the carriage it does not. Also pressing the cancel button on the back of the machine does not make it cancel and reset. I have to figure out why this unit will not reset to home position before I can go any further. Anyone have any idea what could cause this? What I should be checking that would keep the machine in play mode all of the time? Thanks for any help.