The Penny & Giles AL181245 Control Joystick Box is a precision analog controller used to modulate motor or hydraulic drive inputs in industrial machinery. Common failures on this model include degraded potentiometer contacts causing drift or dead zones, power‑rail voltage drops from aging capacitors or solder joints, and mechanical wear of the joystick shaft leading to erratic signal output. Begin troubleshooting by verifying the 24 VDC (or specified) supply rail with a multimeter, inspecting the potentiometer track for continuity and resistance variation across its range, and checking all wiring harness connections for corrosion or loose pins. If the unit still misbehaves, review any error logs from the host controller for “joystick out of range” codes before proceeding to replace the pot or re‑solder suspect joints.[oss-gpt-20b]