Filters AC noise and protects against initial current surges. Bridge Rectifier, Main Electrolytic Capacitor Converts AC mains (110V/220V) into high-voltage DC. Switching MOSFET (e.g., 2N6286 style) & PWM Control IC
Before opening the unit, ensure safety to prevent electric shock: Discharge Capacitors wannien 101v0 power supply schematic repack
The main relay clicks, but the logic board doesn't boot. The Fix: This is unique to the 101v0. The 5V rail is derived from a separate winding on T1. Check: Filters AC noise and protects against initial current surges
): Electrolytic capacitors dry out. Check for bulging or leakage. Replacing these with low-ESR (Equivalent Series Resistance) capacitors is the best fix. Regulators ( The Fix: This is unique to the 101v0
Use a multimeter in diode mode to check the 4 transistor switch circuits for shorts or opens. Step 3: Verification
The Wan Nien 101V0 is a power supply board common in older LCD monitors, often requiring repair due to faulty capacitors or blown fuses. Schematics detail the step-down voltage and inverter sections, which typically feature 24V, 12V, or 5V outputs along with backlight control pins. Troubleshooting involves checking for burnt components and verifying voltage levels. A circuit diagram is available via JustAnswer Power Supply Service Manual