Wannien 101v0 Power Supply Schematic Verified !exclusive! -

To claim a schematic for the Wannien 101V0 is "verified," the following checks must be performed:

He rolled up his sleeves, pulled the dead MOSFET back out, replaced R17 with a fresh metal-film resistor from his drawer, and soldered in the new transistor. He probed the board against the schematic’s test points. Everything matched. 5V standby. 12V rail within tolerance. Feedback loop singing the right song. wannien 101v0 power supply schematic verified

Failed startup capacitor (C8 on aux winding). Verified value: C8 = 50V 47µF (Low ESR, 105°C). Fix: Replace with Panasonic FC or Nichicon PW series. The fake schematics wrongly call for 100µF, which delays VCC rise time and causes the controller to hiccup. To claim a schematic for the Wannien 101V0

Always perform a ring test on the transformer and measure the current sense resistor when reverse-engineering any Wannien 101v0 board, as these two components vary most between production batches. 5V standby

Measure between pin 4 (GND) and pin 7 (Vcc) of the LM324. You should see between 10V and 15V DC. If this voltage is missing or oscillating, nothing else will work.