The Mettler Toledo IND560 is a rugged process‑weighting terminal that uses the 167401K power supply to provide regulated DC to its control board and display. Common failure points on this supply include burned capacitors or electrolytic degradation, blown main fuses, and overheating of the internal voltage regulator; these often manifest as no output voltage or intermittent operation. First‑check steps: verify that the mains input is present and within spec, then measure the 12 V/5 V rail outputs with a multimeter; visually inspect for bulging capacitors or scorch marks on the board; finally review any error codes logged in the terminal’s diagnostics log to confirm if the supply is being reset or tripping.[oss-gpt-20b]