The game does not boot, or keeps resetting.

Game won't boot, or keeps rebooting, because of the reset board

Cause: Its electrolytic capacitors age and dry up, so its watchdog timeout gets shorter until it resets a healthy CPU over and over.

Checks

• Unplug the reset board and power up. If the game now boots, the reset board is at fault.

Fix

• Replace the reset board electrolytics: C1 47 uF 10 V, C2 4.7 uF 10 V, C3 and C4 470 uF 16 V.
• Or run the game with the reset board left out.

Systems

• Gottlieb System 80
• Gottlieb System 80A
• Gottlieb System 80B

Related tips

• Driving the Haunted House up-kicker from a pop bumper driver board
• Up-kicker fires by itself when the flippers are pressed
• What the System 80 reset (watchdog) board does
• Dead CPU board: check the reset line first
• Replace the System 80 reset circuit with a DS1811 chip
• Reset section zener VR1 burnt on a System 80 CPU board
• Niwumpf replacement CPU board takes about 10 seconds to show scores
• First power-up, step 4: add the CPU board one connector at a time

Source: Repairing & Upgrading Gottlieb System 80 Pinballs from 1980 to 1989, Part Two, Clay Harrell (pinrepair.com)