The game reports a U9 sound RAM error; speech call-outs come out wrong and sometimes there is no sound at all.

Sound board RAM error at U9, wrong call-outs or no sound: replace the U9 RAM

Cause: The RAM chip at U9 on the sound board had failed.

Checks

• Reseat the ribbon cables to the sound board.
• Check that no chip on the board has a leg folded under instead of in its socket (one was found at U15 here, though fixing it didn't cure this fault).

Fix

• Replace the RAM chip at U9 on the sound board.

Systems

• WPC Fliptronics

Games

• The Addams Family

Related tips

• Pre-DCS sound board faults by symptom
• WPC sound board versions
• WPC-89 sound board layout
• The WPC sound board runs on its own
• WPC sound board silent, no power-up bong: try the RAM first
• Sound board beep codes at power-on (pre-DCS)
• No audio output at all from the sound board
• Random stray sounds in attract mode after changing the CPU board

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