After each ball drains the game freezes for 10 to 20 seconds; high scores and settings are lost now and then.

Maverick: game pauses 10 to 20 seconds after each drain

Cause: A failing CMOS RAM at 5D, made worse by old game code.

Checks

• Confirm battery voltage reaches the RAM.

Fix

• Replace the RAM at 5D and update the game ROM to the latest version.

Systems

• Data East/Sega CPU Version 3b

Games

• Maverick

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Source: Repairing DataEast 1987 (Laser War) to Sega 1995 (Batman Forever), Part Three, Clay Harrell (pinrepair.com)