Primary switching stage
: This is the "unofficial" headquarters for repairing boards like the 101V0. Users often post full schematic PDFs and "recap" guides specifically for Wan Nien power boards. YouTube Repair Guides wannien 101v0 power supply schematic
The transformer is connected to the AC mains voltage and steps it down to 12VAC. The rectifier circuit uses a bridge rectifier configuration to convert the AC voltage to DC voltage. The rectifier diodes are 1N5408 types, which provide a high surge current rating and low forward voltage drop. Primary switching stage : This is the "unofficial"