Driving the Haunted House up-kicker from a pop bumper driver board
Steps
- Fit coil A-4893 and a fresh sleeve flanged at both ends, with its diode the right way round.
- On an original Gottlieb pop bumper driver board (PBDB), first do the PBDB rework from Part One (C3 reversed, CR1 jumpered, C4 replaced). Aftermarket plug-in boards need no rework.
- On an original board, solder a 4.7 uF 10 V electrolytic on the solder side between connector pin 4 (negative leg) and pin 5 (positive leg). Without it the trigger line picks up noise and the kicker fires when the flippers are used.
- Mount the board under the cellar playfield beside the up-kicker relay.
- At the relay switch, take off the white-orange-blue wire and the wire from the up-kicker fuse, join them together and leave the switch unused. This feeds power to the coil.
- Move the white-black-brown wire from the relay coil (non-banded side) to PBDB pin 4, the trigger input, lengthening it if needed.
- Take the two green ground wires off the up-kicker coil, keep them joined, splice two new leads onto them and run those to PBDB pins 2 and 6.
- Wire PBDB pin 1 to the coil lug the green wires came off (non-banded side).
- Bring +5 V to PBDB pin 5, for example from pin 5 of a pop bumper driver board under the main playfield. For a clean job, run it through the spare position in plug A9-P2/J2 with new .093" round pins, so the cellar playfield still unplugs.
Systems
Games
Related tips
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- Haunted House up-kicker too weak to reach the main playfield
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Source: Repairing & Upgrading Gottlieb System 80 Pinballs from 1980 to 1989, Part Two, Clay Harrell (pinrepair.com)