Squawk & Talk LED flash meanings
No 1st flash: U6 RAM (or U15, U17). No 2nd: PIA U7. No 3rd: PIA U11. No 4th: sound generator U12, or U11 or the U1/U7/U12 connections. No 5th: speech chip U8, or PIA U7 or the U1/U7/U8 connections. PIAs U7 and U11 are interchangeable for swap testing.
Systems
Games
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Source: Repairing Bally 6803 Pinball Games from 1985 to 1989, Clay Harrell (pinrepair.com)