Squawk and Talk supply needs

Unregulated +12 V at up to 3 A feeds the LED, regulator VR1 and the 8 W amplifier U18. The +5 V for the logic comes through regulator VR2, and the speech chip's -5 V is derived from the 6.3 V input.

Systems

• Bally MPU AS-2518-35

Related tips

• Squawk and Talk test points
• The Squawk and Talk test button can lock the board up
• Squawk and Talk: distorted sound or hum
• Squawk and Talk LED stays on and the board never boots
• Squawk and Talk stops at four flashes
• Speech quieter than sound effects until the game warms up
• Squawk & Talk -61 and Say It Again -81 test points
• Speech too deep, slow and garbled: drifted R9 by the speech chip on Squawk & Talk

Source: Repairing Bally Electronic Pinball Games from 1977 to 1985, Part Three, Clay Harrell (pinrepair.com)