Use a TIP102 in place of the pop bumper board's 2N6057

The 2N6057/2N6059 on the PBDB is scarce and costly, and a TIP102 works well in its place. Mount it so its center lead passes through the old transistor's bolt hole to the solder-side trace (see the page photos). Do all the other PBDB updates first.

Systems

• Gottlieb System 80
• Gottlieb System 80A
• Gottlieb System 80B

Related tips

• Gottlieb pop bumper driver transistor keeps burning out: check the coil's diode
• Use TIP102 when replacing a TIP122
• Replace failed TIP122 drivers with TIP102
• Diode-test the TIP120/TIP102 and 2N4401
• Same coil driver transistor keeps blowing after replacement: counterfeit TIP102s
• How the System 80 pop bumper driver board works
• A pop bumper doesn't work at all
• Bench check of a pop bumper driver board

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