Big toy like a pinball machine has many benefits - fun to play, and teaches you heaps about electrical/mechanical thingys. Here is the place to learn. Sometimes it's best to get someone nearby to pop over, or Skype someone for advice and a look through. Pretty much everything is fixable, and usually easily. Diagnosis is the only trick but, and that comes with experience. A tech will do it for you, but cost you, or use the font of knowledge here.