Custom Early Pinball Sound Board #26: Missing Address E Command Line
Автор: geeteoh
Загружено: 2026-01-04
Просмотров: 71
This issue comes up from time to time. My custom sound board will not play stock sounds. It will only play the background and solenoid sounds. At the end of the game, the background will continue to play. Your stock sound board appears to play fine.
When this occurs, it is very likely the S4 (Address E) command line is floating. This is the 5th command line to the sound board that is only used by the sound board. My board cannot detect stock sounds, but the stock sound board will be limited to half its sounds and they will be off.
The S4 command line is on the MPU connector J1 pin 7. It is on the sound board at J1 pin 12. The problem is likely at the MPU connector. Repin that connector.
In this video I show what my board does when S4 is floating. Then I show the stock sound board and how it sounds different when the S4 is connected.
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