Check sound board jumpers after a board swap
System 6 and 7 sound boards must be jumpered for the game, especially one taken from another machine. See the CPU/sound board jumper section of part one/two of the guide.
Systems
Related tips
- Sound board jumpers for 2K sound-only games
- Sound board jumpers for sound-and-speech games (2K ROM)
- Joust sound board jumpers (4K 2532 sound ROM)
- Hyperball sound board jumpers (4K 2532 sound ROM)
- Which sound board each game uses
- Using the sound board test switch
- Powering a sound board for testing
- The sound board is its own computer
Source: Repairing Williams System 3 to System 7 Pinball 1977 to 1984, Part Three, Clay Harrell (pinrepair.com)