Wannien 101v0 Power Supply Schematic Verified -
Wannien 101V0 is a common power supply and inverter board used in older LCD monitors (such as those from Dell, Acer, and ViewSonic). While an official manufacturer PDF is rare, the board is widely documented in repair communities for its simple, single-sided design.
- Search Online: Look for electronics forums (like Reddit's r/LearnElectronics, r/Electronics, or specific engineering forums) where you might find discussions or posts about the Wannien 101V0 power supply.
- Datasheets: Websites like Datasheet catalog, Alldatasheet, or the manufacturer's official website might have datasheets or reference designs that can be helpful.
- Start-up: The IC is powered initially via a high-value start-up resistor connected to the high-voltage DC rail.
- Switching: The controller drives an N-channel MOSFET (typically a TO-251 or TO-252 package, such as the 2N60 or 4N60). The switching frequency is fixed, generally operating between 50kHz and 65kHz.
- Feedback & Regulation: The verified schematic shows a current-sense resistor (Rsense) connected to the Source pin of the MOSFET, providing Over-Current Protection (OCP) feedback to the controller.
Look for "bulging" or leaking electrolytic capacitors. These often fail due to heat from nearby FETs. Test Voltage Rails: Measure the output pins. If you see , the switching MOSFET or PWM controller may be dead. Discharge First: Safety Warning: wannien 101v0 power supply schematic verified
Common Failure Points on the Wannien 101v0 (Based on Verified Schematic)
- Likely Cause: Q1 (2N3055) shorted.
- Test: Desolder the pass transistor. Use a multimeter in diode mode. A short between Collector and Emitter confirms failure.
- Fix: Replace with TIP35C. Also check the driver TIP122.