If you are repairing this board, focus on these common failure points:
| | Typical Components | Common Failures | | :--- | :--- | :--- | | EMI & Primary Rectification | Fuse (T3.15A/5A), X2 capacitor (0.33µF), bridge rectifier, main capacitor (120µF, 450V). | Blown fuse, shorted bridge rectifier, bulging main capacitor. | | PWM Control Circuit | PWM controller IC (e.g., 23842), primary switching MOSFET, optocoupler (PC817). | Dead controller IC, shorted MOSFET, faulty optocoupler. | | Output Rectification | Fast-recovery diodes (MUR460), Schottky diodes, output filter capacitor. | Short-circuited (shorted) diodes, bulging capacitors.| | Voltage Feedback | LM324 operational amplifier (op-amp), SMD resistors (e.g., R13: 01C = 10kΩ). | Damaged LM324, out-of-tolerance SMD resistors (especially sense resistors). |
If you need a schematic for repair or modification, try these options:
Converts AC input to high-voltage DC using a bridge rectifier and large filtering capacitors. wannien 101v0 power supply schematic exclusive
[Insert link to download the schematic]
If you're interested in exploring the Waniin 101v0 power supply schematic further, I recommend:
The 101V0 schematic features a robust design optimized for regulating DC voltage and controlling multiple power outputs: If you are repairing this board, focus on
The schematic indicates four transistor-based switches. These are controlled by a signal (often from a main controller) to turn on/off the power to specific loads.
Check the input fuse for continuity. If blown, check for shorted diodes or transistors before replacing it.
Keep in mind that working with high-voltage power supplies requires caution and attention to safety. Always follow proper safety procedures and guidelines when handling electrical circuits. | Dead controller IC, shorted MOSFET, faulty optocoupler
Standard silicon diodes cannot handle 100kHz switching frequencies. The Wannien 101V0 uses ultra-fast Schottky barrier rectifiers (dual-diode common cathode packages are common here) to rectify the secondary AC pulses back into DC.
The PSU is trying to start but shutting down due to a short circuit. Check secondary Schottky diodes (D10) or output tantalum/electrolytic capacitors for shorts. Degraded Feedback Loop