The Eldetco Inc 2100B feed controller is a high‑current industrial drive used to regulate conveyor or feeder motors in manufacturing lines. Common failure points for this class of unit include over‑temperature protection tripping, power supply voltage drops, and degradation of the MOSFET array or IGBT modules that control the motor current. Initial checks should verify the input 480 V AC (or specified DC) is within spec, inspect all fuses and circuit breakers, and confirm that the controller’s status LEDs or diagnostic panel indicate normal operation. Next, examine the power supply board for burnt components or loose connections, then test the output driver stage with a multimeter to ensure proper voltage swing before proceeding to motor‑side diagnostics.[oss-gpt-20b]