I have a 1976 jukebox pinball machine that was given to me they said it used to play for awhile then wouldn’t so it sat in a house for 9-10 years so I’ve got it coming on lights and all when u hit the start button there’s a wheel looking mechanism that just keeps turning n turning it says on the inside it’s a cam all I done is fixed the power cord dropped a quarter in and all the scores turned n reset to zero n the cam wheel just turns n turns any idea what is going on n how to start fixing it thanks

Also I have a video of it but I don’t know how to upload it on here