The Barber‑Colman MACO 8000 is an industrial operator station and controller used in injection molding and other process control applications, typically housed in 9–16 slot enclosures with a 12‑inch touch screen interface. Common failure modes for this class of equipment include power supply degradation (input voltage ripple or component wear), I/O module faults (communication errors on serial/ethernet links), and display or keypad failures due to moisture ingress or capacitor aging. First‑check diagnostics should verify the 120 VAC input and regulated output rails, inspect all connectors and expansion cards for corrosion or loose contacts, and review any stored error codes via the HMI menu or diagnostic logs.[oss-gpt-20b]