How to read the flashes on pre-1988 6803 games

On all but the last four 6803 games, the board flashes once after each power-on test passes. If a test fails the program hangs inside that test, so count the flashes: the failing part is the test after the last flash.

Systems

• Bally 6803

Games

• Beat the Clock
• Black Belt
• City Slicker
• Dungeons & Dragons
• Eight Ball Champ
• Hardbody
• Heavy Metal Meltdown
• Lady Luck
• Motordome
• Party Animal
• Special Force
• Strange Science

Related tips

• Eight-flash LED code meanings
• Nine-flash LED code meanings
• Missing lamp fuse changes the flash count
• CPU LED stops just short of the full count
• CPU never starts: check the reset line at U1 pin 6
• Game boots but will not take credits or start
• Nonsense adjustment values after a battery failure
• Factory CPU jumpers by game

Source: Repairing Bally 6803 Pinball Games from 1985 to 1989, Clay Harrell (pinrepair.com)