DS1811 reset chip threshold versions
The DS1811 comes as -15 (4.13 V), -10 (4.35 V) and -5 (4.62 V) trip points; use the -10. Order the TO-92 package, not the SOT23 surface-mount one. Because it bypasses about 25 parts and many corroded traces, it suits badly corroded boards.
Systems
Related tips
- What the System 80 reset (watchdog) board does
- How the control board reset circuit works
- Game won't boot, or keeps rebooting, because of the reset board
- Updating pre-Ice Fever reset boards to protect RAM Z5
- Game resets during play from a failing logic filter capacitor
Source: Repairing & Upgrading Gottlieb System 80 Pinballs from 1980 to 1989, Part One, Clay Harrell (pinrepair.com)