Black Hole and Haunted House third relay ("U")

These games have a third under-playfield relay, U, which switches on the lower playfield lighting and flipper power while cutting the upper flippers. The lower playfield #313 lamps run from the 24 V coil supply.

Systems

• Gottlieb System 80

Games

• Black Hole
• Haunted House

Related tips

• Correct up-kicker coil for Black Hole and Haunted House
• Black Hole playfield-mounted transistors Q1 to Q5
• Haunted House playfield-mounted transistors Q1 to Q3
• Black Hole DIP switch traps
• Haunted House: no sound 16 in the sound test
• Black Hole: new motor on the original gearbox
• Haunted House switch matrix wiring
• Where the arc capacitor goes on the Haunted House up-kicker

Source: Repairing & Upgrading Gottlieb System 80 Pinballs from 1980 to 1989, Part One, Clay Harrell (pinrepair.com)