Demul Mpr- 21931. Ic501 __link__ «2027»

: Primary side contains lethal voltages up to 400V DC. Discharge bulk capacitor before probing.

If you are holding a board marked "Demul MPR-21931" and have identified a failed component labeled IC501, you are likely dealing with the . demul mpr- 21931. ic501

Under the "Rom Paths" section, ensure the path points to your newly created "roms" folder. : Primary side contains lethal voltages up to 400V DC

In the world of power supply unit (PSU) repair—particularly for industrial equipment, medical devices, and high-end vintage computing—few designations cause as much head-scratching as . demul mpr- 21931. ic501

Last note : Archives from 2005 suggest "Demul" was a short-lived OEM for Korean medical imaging PSUs. If your board is from a Watson or Siemens device, flash the firmware after repair – some units digitally verify parameter IC501’s absence.