Kangaroo by Paul Swan
From Arcade Otaku Wiki
BOARD NO: 0073
GAME: Kangaroo
MANUFACTURER: Sun Electronics
DATE: 1982
HARNESS: (unknown - deduced power, video sync and sound only)
SYMPTOM (28/04/96)
No sound.
SOLUTION
A large electrolytic capacitor was missing from amp output. Fitting one fixed the sound (value guestimated at a few hundred uF).