Wannien — 101v0 Power Supply Schematic Verified !exclusive!

Utilizes Schottky diodes for rectification and an optocoupler (like the PC817) for feedback to ensure voltage stability. Common Failure Points

Step 2: Safe Cold Testing (Multimeter Diode/Resistance Mode) With the unit completely unplugged and discharged: wannien 101v0 power supply schematic verified

Desolder the pass transistors and check them using a multimeter's diode test function. Replace any shorted units and ensure fresh thermal paste is applied to the mica insulators. Symptom 2: Zero Output Voltage, Display Panel Works Symptom 2: Zero Output Voltage, Display Panel Works

) convert the high-frequency output of the transformer back to DC. Filter Capacitors : These are the most common failure points. Look for: 1000uF / 10V 1000uF / 16V 470uF / 25V (12V Rail) shunt regulator and an Optocoupler 🛠️ Common Repair Data Component Label Common Value/Part

: Large yellow/blue coil that outputs high voltage to the CCFL connectors. 🛠️ Common Repair Data Component Label Common Value/Part Number 2A / 250V Slow-Blow Main Input Protection 470uF - 1000uF / 25V Secondary 12V Filtering (Fail often) 1000uF / 10V Secondary 5V Filtering (Fail often) 2SK2645 or 7N60 Primary Switching MOSFET LD7552 or LD7575 Power PWM Controller 🔍 Troubleshooting Steps Dead Board