Wannien 101v0 Power Supply Schematic Verified |verified| -

If the link is dead, use the in Section 6 – it will be 100% verified for your board.

Replace generic stock capacitors with premium, high-temperature (105°C rated), low-ESR capacitors from trusted brands (e.g., Nichicon, Nippon Chemi-Con, or Panasonic). wannien 101v0 power supply schematic verified

: This indicates an inverter fault. Check for a shorted inverter MOSFET or a failed CCFL lamp. Work on this board involves lethal voltages If the link is dead, use the in

Check the four internal diodes. You should see a forward voltage drop of roughly 0.5V to 0.7V in one direction and an open circuit (OL) in reverse. Check for a shorted inverter MOSFET or a failed CCFL lamp

Find the VCC pin of the PWM controller chip. It needs a stable voltage (usually between 12V and 18V DC) supplied by the auxiliary transformer winding to maintain switching operations.

) connected to the high-voltage DC bus. If they go open-circuit, the PWM IC never turns on. Secondary Diode or Output Caps

Switch-mode power supplies like the Wannien 101V0 contain lethal voltages. The bulk electrolytic capacitor on the primary side can hold a charge of over 300VDC long after the AC power plug has been disconnected. Always discharge this capacitor safely using a high-wattage power resistor before touching any components on the board or tracing connections with a multimeter.