Volcano playfield-mounted transistors

Volcano has three coils switched by under-playfield transistors: the fire pit (fed from lamp driver L8), the ball release (L15) and the hole kicker (L16).

Systems

• Gottlieb System 80

Games

• Volcano

Related tips

• Black Hole playfield-mounted transistors Q1 to Q5
• Single-PROM System 80 games and their game numbers
• Testing a playfield-mounted 2N5875/2N5879 with a meter
• Replacements for the 2N5875 under-playfield power transistors
• Adding the 4.7k base pull-up to playfield power transistors
• Coil stuck on that is driven through a playfield-mounted power transistor
• Which wire goes where on a playfield 2N5879
• Converting the lower playfield #313 lamps to #44/#55

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