The ball doesn't speed up around the supercharger, fuse F103 blows after a few laps, and all three magnets pulse whichever opto the ball passes.

Getaway: supercharger weak, F103 blows, all magnets pulse

Cause: Failed CMOS chips on the accelerator board, U2 (4011) and U3 (4071); the board's LM339s are less likely if the optos test clean.

Checks

• Check the accelerator optos in switch test for clean single changes. If they test good, the LM339s are probably fine.

Fix

• Replace U2 (4011) and U3 (4071).

Systems

• WPC Fliptronics

Games

• The Getaway: High Speed II

Related tips

• Tracing the VMA signal through U19, U14 and U15
• Two flashes only: U8 5101 RAM
• Switch row (return) circuit on the CPU board
• Whole switch column dead after working under the playfield
• One switch row dead: parts to check in order
• System 11 switch matrix: connectors and chips
• Switch matrix dead after an under-playfield adjustment with power on
• Fixing a dead switch row on the CPU board

Source: Repairing Williams/Bally WPC Pinball Games from 1990 to 1999, Part Three, Clay Harrell (pinrepair.com)