The Heraeus Electro‑Nite Quik‑Lab‑E Control Module is a compact instrumentation board that interfaces the QuiK‑Lab® E thermal analysis system with external PLCs and data acquisition systems. Common failure points for this class of industrial control boards include power supply decoupling failures, burned or cracked capacitors on the main regulator rail, and damaged I/O trace pads due to electrostatic discharge during handling. Initial troubleshooting should verify the 24 V/12 V input rails with a multimeter, inspect all surface‑mount components for visual signs of damage, and check the module’s diagnostic LEDs or error codes against the user manual. If power is present but functionality is lost, perform a continuity test on the communication lines (e.g., RS‑485, Ethernet) to rule out trace breakage.[oss-gpt-20b]