The input stage is the first section of the . It ensures that noise from the supply does not enter the module and vice versa.
Detailed schematics and service manuals for repair are available on specialized electronics databases: S-360-12 Schematic PDF : You can view or download the technical circuit layout at Elektrotanya Alternative Schematics s36012 power supply circuit diagram
Usually two large 470µF or 680µF electrolytic capacitors that smooth the ripple. 2. The PWM Controller (The Brain) The input stage is the first section of the