A fuse and an NTC thermistor (to limit inrush current) protect the board.
Disclaimer: Working with mains-voltage switching power supplies carries risk of electric shock or fire. Only attempt repairs if you have appropriate training and isolation equipment. s36012 power supply circuit diagram
Often caused by a blown fuse, failed NTC thermistor, or shorted switching transistors. A fuse and an NTC thermistor (to limit
: A thermal switch (bimetallic or thermistor-driven) is attached to the secondary rectifying diode heatsink. When internal temperatures cross approximately 65∘C65 raised to the composed with power C Often caused by a blown fuse, failed NTC
Two NPN high-voltage transistors (often TO-3P or TO-247 packages, such as 13009 or similar) are arranged in a half-bridge configuration.
A dual-diode (often MBR20100 or MBR30100 ) performs high-speed rectification. These are mounted on the secondary heatsink.
The AC input passes through an Electromagnetic Interference (EMI) filter designed to reduce noise. This section includes: For overcurrent protection.