The Sherman Treaters GX‑20 is a control board used in the company’s high‑frequency treater generators, typically driving inverter circuits and monitoring process parameters. Common failure points on this class of industrial controllers include burnt or tripped fuses on the power supply section, degraded heat‑sink connections leading to overheating, and failed MOSFETs or IGBT modules that regulate the inverter output. For a first‑pass check, verify that the 48 V DC input is present and stable, inspect the board for visible burn marks or loose solder joints, and review any stored error codes from the built‑in diagnostic EEPROM. If the unit still fails to start after these checks, proceed with component‑level testing of the power MOSFETs and the high‑frequency oscillator circuit.[oss-gpt-20b]