The Voac Hydraulics ICM435‑0192 is a rugged industrial joystick controller used to translate operator input into hydraulic actuator commands. Common failure points for this class of units include degraded analog signal conditioning circuits (op‑amp or ADC failures), worn potentiometer contacts, and power supply decoupling capacitor fatigue; the board may also suffer from corrosion on the I/O connectors in harsh environments. Begin diagnostics by verifying that the 24 V DC supply is within spec and checking for proper ground reference, then inspect the joystick potentiometers and connector pins for wear or contamination, and finally review any error codes logged by the host controller to isolate a faulty channel.[oss-gpt-20b]