PINBALL Machine LED Cabinet MOD - modification part | eBay
Adding a keyboard (and other upgrades) to the Bally Professional Arcade - Gunstar's Blogs - AtariAge Forums
Bally 2518-32 Sound Board - U9 LM741 -
How Serial Flippers Work In Early SS and EM Pinball Machines -
Pinball Switches - Fixing, Adjusting and Cleaning the Right Way
Mal vorgestellt: eine weitere Anti-Flicker Lösung für LEDs in Bally EE | Flippermarkt
Pinitech UNO Bally / Stern Pinball Display - Pinitech.com
Blauer Start Button für Williams/Bally/Stern Pinball
Pinball Switches - Fixing, Adjusting and Cleaning the Right Way
PINBALL Repair EM Electro Mechanical Arcade Games (pinball, pitch and bat, bowlers), part three
Atari 5200 4-Port Switchbox Bypass Modification & Cap Kit
Arcade, Midway, MCR-Replacement Switching Power Supply with Additional Outputs | eBay
PINBALL Repair EM Electro Mechanical Arcade Games (pinball, pitch and bat, bowlers), part three
Bally - Game specific items • Ministry of Pinball
Twilight Zone - Bally - Game specific items • Ministry of Pinball
I recoded my Stern Stars (1978) by replacing the processor with an Arduino Nano, and created a generic Bally/Stern OS you can use to make new rules for your early SS Bally/Stern