Attract mode stops on the four high scores and goes no further; test mode cannot be entered and coins are not accepted.

Game stuck showing the last four high scores

Cause: A CPU board with the small 6116 RAM is fitted to a game whose software expects the 26285-1 board with a 6264 at U3.

Checks

• Count the pins on U3: 24 means 6116, 28 means 6264.
• Check jumpers JP3/JP4 match the RAM fitted.

Fix

• Fit a 26285-1 board, or re-socket U3 for a 6264 and set JP3 out, JP4 in.

Systems

• Gottlieb System 3

Games

• Barb Wire
• Frank Thomas' Big Hurt
• Freddy: A Nightmare On Elm Street
• Gladiators
• Mario Andretti
• Rescue 911
• Shaq Attaq
• Stargate
• Street Fighter II
• Tee'd Off
• Waterworld
• Wipe Out
• World Challenge Soccer

Related tips

• Logic chips worth stocking
• Replace a failed 6116 RAM with a 6264
• Game resets every two seconds
• One or two display columns stuck on
• No sound, only amplifier hiss with the volume up
• The CPU memory battery is built into a non-socketed RAM chip
• PIA LED lights, goes out, then lights again
• CPU still will not boot after the basics

Source: Repairing Gottlieb System 3 Electronic Pinball Games from 1989 to 1996, Clay Harrell (pinrepair.com)