PINBALL MEDIC'S
Coin-Op Arcade Technical, Maintenance Tips, Techniques and Game Tech Tips.

Links to all of our Technical How To's and other information.

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51 Q n A's and How To's for you to peruse.


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1. Number 44 Light Bulb to 47 Light Bulb Replacement to help prevent playfield plastics warping and scoreboard ink flaking.
See Bulb Image or Arcade Lamp and Bulb Charts.

3. Pinball Playfield Steel Game Ball replacement schedule.
Also see question 23.

5. Monitor Burn-In Image problems.

7. Pinball System Board Identification and Game Name Charts

9. What is a Video Monitor Capacitor replacement kit? (Re-Cap kits)

11. Can game batteries and battery acid damage circuit boards?
The batteries are mounted to the MPU board in most Arcades.

13. Should Spike Arrestors or Power Strips be used on a Coin Operated Arcade Game?

15. How to determine whether to Repair or
Replace a Pinball Circuit Board


17. Coin-Op game shipping Methods and Costs. Note: This information needs updating. The phone numbers and personal have changed.
See Shipping and Yellow Jacket pinball Dolly pages.

19. What brand of AA sized battery is best for my coin-op arcade game?

Is it OK to use a rechargeable battery and what is the purpose of these batteries?

21. Can I leave a game powered on all of the time?

23. Are there differences between pinball game balls from different suppliers and what can this difference do to a playfield?

25. What types and sizes of Arcade cabinets are there and does the cabinet type add or subtract from a game's worth?

27. Flipper Bushing types demystified and flipper scrape damage explained.

29. Line voltage and the dangers of High Tapping an arcade's transformer.

31. Types and photos of pinball playfield lockdown bars.

33. Why would someone wax a playfield and what would they use?

35. What are some Wide Body and Standard playfield glass dimensions?

37. How to get started constructing a new pinball.

39. What are pinball Flyers and where to find them?

41. How to show and find Easter Eggs and Cows on your pinball.

43. What is a Scoremotor and were can you find a replacement?

45. What's an Arcade Suicide Battery?

47. What is Protective Dirt and what might it do?

49. What can be used in an emergency to clean an assembly without having to disassemble it?

Glass Cleaner Consequence.51. What is Glass Cleaner Consequence and what can be done to prevent it?
2. How to Brighten Gottlieb system 1 and 80 Displays.

4. Matching Paint Colors on Pinball Side Art

6. Wide Body Playfield Glass replacement and some playfield glass dimensions.
See question 35.

8. What is the Playfield Rubber Ring replacement schedule?

10. What are Pinball Circuit Board Capacitor Kits.

12. Solenoid Coil Part Numbers Explained.

See solenoid coil charts and How solenoid coils work.

14. How often should plastic and EM Pinball parts be greased?

16. Why is my Coin-Op Game Resetting during game play?

18. Why does solenoid, flasher bulbs and other high current draw components affect the five volt game logic power supply line?
Why doe this cause game resets?


20. What is the difference between the terms 'Shopped', 'Refurbished' or 'Restored' when referring to a game's condition?
Also See question 40.

22. Do all pinball games use the same size of
game ball or are there pinball specific game balls?


24. Confused about fuses?
How is a fuse rated and what fuse types are in Coin-Op Arcade games?


26. What are the sizes of dot matrix displays (DMD) and are there any differences between display manufacturers?
See question 51.

28. New reproduction versus old original
backglass/scoreboard glass


30. What methods can be used to
fix weak or non-operating flippers?


32. Why can't Coin-Op repair shops fix
home version pinball games?


34. What kind of oil can be used on arcade game motors and pinball leg level adjusters?
See question 14 for greasing plastic parts.

36. Who are the major Pinball manufacturers in the U.S.A.?
Note: This answer needs updating.

38. What is the correct pinball leg length for my game?

40. What does "Restored" mean?

42. What is a Bowler or Bingo game and why can you not find anyone to repair or refurbish these arcades?

44. Can a Pinball game be equipped with a smaller/larger
game ball to multiply or decrease the game's playing speed?


46. What the heck is a Beer Seal and what does it do?

48. What does Factory Settings Restored mean?

50 questions50. What is the 50th question?



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Updated 4/7/22.