A couple of questions.

[Texxut]

First, Here are some pictures of the light bulbs from behind the reels. One of them clearly has a broken filament, the other looks intact. But they were next to each other and they were both not working. Where can I buy some replacements?
lights 1.jpglights 2.jpglights 3.jpg
My next question is about the interchangeability of different manufacturers. Are some parts interchangeable? Such as lights, reel motors, etc.?

[owennewton]

I am not sure on a source for the lights but someone will chime in on that question.

Now with parts the quick answer is "yes" many parts are used in more than one model and some are the same from more than one manufacturer but it depends on what it is and from when. I know that was not much help but it is hard to be much more specific without knowing what you are looking for.

[yose]

Those look like standard wedge base bulbs. They unplug from the base . You can find them on ebay ,and slot-pachinko sells them.Some of the parts are interchangeable,you just have to know what you are looking for.