Classic Bally/Stern Display Schematics

Below are original display schematics for Bally/Stern displays as well as updated schematics showing the changes for the Pinitech RETROFIT conversion kit displays (many thanks to Peter Koch for providing updated schematics!).


Please note these kit are no longer being sold. Display schematics and documents are here for anyone that had purchased a kit or needs to troubleshoot their original plasma display boards. We are now offering Full DIY Display Kits with custom digits with commas.

BALLY

PDFs of Original Schematics:
Bally AS-2518-15 (6-digit) *Early 6-digit, no footprints for 2.2k pull-ups on digit drivers (instead soldered to back of pcb)
Bally AS-2518-21 (6-digit)
Bally AS-2518-58 (7-digit)


STERN

PDFs of Original Schematics:
Stern A-434 (6-digit) *More common DA-100 with 2.2k pull-ups on digit drivers
Stern B-434 (6-digit) *Looks like early "blue curvy trace" Stern DA-100, no footprints for 2.2k pull-ups on digit drivers (instead soldered to back of pcb)
Stern A-645 (7-digit)
Stern DA-300 (7-digit)


Also for reference, here are pictures of various display revisions

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