The Gould Series 600 AC Servo Amplifier A631‑06 is a high‑current motor drive used in industrial motion control systems, typically powered from 115–240 VAC and interfaced via analog or digital I/O. Common failure points for this class of drives include overheating of the power MOSFET array, damaged gate driver ICs, failed input protection diodes, and degraded capacitors on the DC bus; these often manifest as over‑temperature shutdowns, erratic speed control, or loss of motor output. First‑check steps: verify the supply voltage and polarity at the drive terminals, inspect for visible signs of component damage (burnt traces, swollen caps), and review any diagnostic error codes displayed on the panel or logged by the host controller.[oss-gpt-20b]