Course curriculum

  • 1

    Introduction

    • Hello and welcome!

    • Questions and Feedback

  • 2

    Safety

  • 3

    Parts of a Machine and Schematic Symbols

  • 4

    YouTube Live (1/7/2021)

    • Introduction

    • Symbols

    • Wire Color

    • Transformer

    • Abbreviations/Jones Plugs

    • Score Motor and Timing Sequence

    • Transformer (Again)

    • 10 Point Chime/10 Point Relay/ 100 Point Relay

    • Powering the Score Motor

    • Start Button

  • 5

    Simple Circuits

    • Introduction

    • Simple Circuit

      FREE PREVIEW
    • Series Circuit

    • Parallel Circuit

    • Series/Parallel Circuit (Example 1)

    • Series/Parallel Circuit (Example 2)

    • Transformer

    • Circuit Quiz

  • 6

    Relays

    • Introduction

    • Relays and Switch Stacks

    • Relays (Revisited)

    • Locking/Latching

    • Relay Locking Quiz

  • 7

    Real-Life Example

  • 8

    Conclusion

    • Thank you!

  • 9

    Bonus Material

Recent Reviews

5 star rating

Great stuff for learning EM repairs!

paul frie

This Troxel Repair series has been great for learning the basics of repairing EM pinball machines. I have went over a few subjects two or three times just bu...

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This Troxel Repair series has been great for learning the basics of repairing EM pinball machines. I have went over a few subjects two or three times just burn it into memory :D Hope to see more like this in the future!

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5 star rating

Excellent overview for a beginner

Scott Guenther

This course did a great job of taking you through what you'd see when you first look at some pinball schematics. It definitely helped me have a better basic...

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This course did a great job of taking you through what you'd see when you first look at some pinball schematics. It definitely helped me have a better basic understanding of how an old EM pinball machine works.

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5 star rating

Good for beginners

Paul Moore

Theron breaks down simple circuits to help build a visual for reading schematics. Some real schematics would add value particularly examples from the main ma...

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Theron breaks down simple circuits to help build a visual for reading schematics. Some real schematics would add value particularly examples from the main manufacturers ...particularly to show how they all use the same circuits but illustrate them in their own style. Also might be nice to indicate the year and game when showing switches or motors. I enjoyed the course. I did most of it on an iPhone and the quiz questions forced me to hit the submit button twice for some reason.

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4 star rating

Well done

John Roeder

It appears you have covered what a beginner would need to know to be comfortable starting with basic troubleshooting. How hope my discussion comments were h...

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It appears you have covered what a beginner would need to know to be comfortable starting with basic troubleshooting. How hope my discussion comments were helpful.

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4 star rating

Very good

Marc Nierman

Very good

Very good

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Instructor

Theron Troxel

Theron Troxel is a high-school math teacher who happens to love everything pinball and arcade related. These classes allow him to combine his two passions of teaching and pinballs to create online courses. He can also be found at troxelrepair.com where he blogs about recent repairs and other tricks of the trade.