Remove an old chip socket
Steps
- Pry the plastic frame up with a small screwdriver, taking care not to cut traces.
- Add a little solder to each exposed leg.
- Heat each leg and pull it out with needle-nose pliers, or suck it out with a solder sucker from the component side.
- Clear each hole, then lightly sand the area with 220 grit.
- Check for lifted or broken traces with the meter on continuity; ROM sockets share most pins, which makes testing easy.
Systems
Related tips
- Chips that commonly fail on System 3-7 boards
- Which RAM chips go at IC13 and IC16
- System 7 CPU ROM sockets
- Memory protect chips to check after the 5101
- Obsolete chips on System 3 to 7 CPU boards
- CPU chips Leon's test code does not need
- Lockups and locked-on coils from worn chip sockets
- Williams house numbers for the 6800-family chips
Source: Repairing Williams System 3 to System 7 Pinball 1977 to 1984, Part One, Clay Harrell (pinrepair.com)