BOARD NO:     0061
GAME:         Scramble
MANUFACTURER: Konami
DATE:         1981
HARNESS:      KONAMI-S

SYMPTOM (05/05/96)
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No sound.

SOLUTION
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There was no noise at all, not even digital background noise with the volume turned up. The speaker connections and tracking were verfied with a multimeter as being OK. The bypass capacitor was not shorted. The amplifier itself had power and was warm. A logic probe indicated that the amp mute line was not active, and that the 2SC2320 mute drive transistor was off. An oscilloscope revealed sound output from the AY-3-8910's. Changing the amplifier fixed the game.