The Precor C962i treadmill uses a lower PCA control board (part 37882‑104) that drives the deck motor, speed sensor, and safety switches. Common failure modes on this board include burnt or blown fuses in the motor drive circuit, shorted motor windings, and loss of communication with the main controller due to damaged PCB traces or capacitor failures. Inspect the board for visible burn marks, test the motor driver ICs with a multimeter for continuity, and verify that the 24 V DC supply is stable; also check the speed sensor signal and safety switch contacts for proper operation. If faults are found, replace any failed components (capacitors, fuses, or damaged traces) before re‑testing the deck motor and speed control loop.[oss-gpt-20b]