Wannien 101v0 Power Supply Schematic Jun 2026

If you read 0V or a heavily degraded voltage, the regulator IC may be blown, or a shorted decoupling capacitor might be pulling the rail to ground. 3. Test the Transistor Switches

The Wannien 101v0 design relies on an efficient, well-protected regulator topology. Rather than dealing with raw high-voltage AC directly on the secondary distribution stage, the board typically relies on a robust primary step-down block followed by localized regulators.

If you are bench-testing a standalone Wannien 101v0 board, use this structured logic sequence to isolate errors without damaging the components: wannien 101v0 power supply schematic

| Component | Value | Role | |-----------|-------|------| | F1 | T3.15A 250V (slow-blow) | Input protection | | BD1 | GBU806 (8A 600V) | Bridge rectifier | | C5, C6 | 220µF 200V (x2) | Bulk storage | | Q1, Q2 | MJE13007 (or 13009) | Switching transistors | | C14, C15 | 330nF 250V (x2) | Half-bridge capacitors | | T1 | EI33 or EE35 core | Main transformer | | D9, D10 | MBR20100CT (20A 100V) | Output Schottky | | U1 | TL494CN | PWM controller | | U2 | PC817C | Optocoupler | | U3 | TL431 | Voltage reference | | L1 | 3.3µH (yellow-white toroid) | Output filter inductor |

The (often identified as model E88653 ) is a versatile power supply board frequently used in monitors and moderate-power electronic devices. A schematic for this board is essential for troubleshooting common hardware failures, such as power-on issues or display signal loss. Key Technical Specifications If you read 0V or a heavily degraded

If there is no power at all, look first at the input lines on your diagram. A sudden spike in electricity can blow the primary fuse. Check for continuity across the fuse to see if it needs a simple replacement. 2. Investigating Swollen Capacitors

Here’s how to troubleshoot and effectively map your board without the original diagram. Rather than dealing with raw high-voltage AC directly

| Device Type | Specific Example | Details | | :--- | :--- | :--- | | | ASUS EXA1202YH | This power supply, used with an ASUS notebook, contains a board labeled "WANNIEN 101V0". A technician on the EletrônicaBR forum described troubleshooting this exact unit, noting that the board code was "ADA19470YB10 341194700A14 2012/07/31 REV: A WANNIEN 101V0". | | PlayStation 2 Slim (SCPH-70100) | External Power Adapter | The external power supply for the PS2 Slim also uses a board with the same labeling. A user on the PLCForum Italia described opening their faulty power supply and finding the PCB marked "WAN NIEN 101V0 (94V)". | | UPS (Uninterruptible Power Supply) | LYONN DESIRE-500 | An engineer on the Electrónica Argentina forum found this board inside a LYONN DESIRE-500 UPS. They were able to identify a burnt SMD resistor's value (R13 = 10k) by examining an identical board in another UPS. |

Inspect the output pins (often labeled GND, +12V, BL_ON) for corrosion that might prevent stable voltage delivery to the mainboard. Technical Specifications (Estimated) Wan Nien 101V0 Power Supply Schematic - Expert Q&A

Filters high-frequency noise and protects the board from surges.

The most common fault in older power supplies is failing electrolytic capacitors. Look for swollen, leaking, or damaged capacitors near the switching circuit.