Later games check for stuck switches at power-on

From Blackwater 100 on, the game checks for stuck switches at power-on, much like a Williams System 11 game.

Systems

• Bally 6803

Games

• Atlantis
• Blackwater 100
• Truck Stop

Related tips

• Early stuck switch test only shows the lowest switch
• Game stays in tilt
• Switch reads stuck because of a shorted capacitor
• Why strobe 5 needs its jumper when it has switches
• Keypad keys are switch matrix crossings
• Switch matrix connector voltages under the test EPROM
• Switch column 5 dead after swapping in a CPU board

Source: Repairing Bally 6803 Pinball Games from 1985 to 1989, Clay Harrell (pinrepair.com)