The game-over music doesn't play properly while other sounds work.

Game-over music missing: reflow the sound board header pins

Cause: Cracked solder joints on the header pins of the sound board (the board that also carries the ribbon cable to the displays).

Checks

• Look closely at the header pin solder joints on the sound board.

Fix

• Reflow the solder on the sound board header pins.

Systems

• Williams System 11

Games

• High Speed

Related tips

• How System 11 makes sound
• Which System 11 sound board each game uses
• Using a D-11581 sound board in other System 11 games
• Power-on sound tones and what they mean
• The D-11581 sound board: chips and ROMs
• D-11297, D-11298 and D-12338 sound boards
• CPU sound diagnostic switch SW1 results
• Volume suddenly goes to full blast and the volume pot does nothing: shorted pot wiring

Source: Pinball Repair help group!! (Facebook group)