Wannien 101v0 Power Supply Schematic ((free)) < Updated >

If you’ve landed here, you are likely staring at a dead power supply. Maybe it’s from a LED sign, a CCTV camera bank, or a 3D printer. The bad news? Official schematics for the "Wannien" brand are almost impossible to find. The good news? The 101V0 is almost certainly a clone of a very common topology.

If it just has bulging caps or a blown fuse: Use the TL494 reference design from the Texas Instruments datasheet as your schematic. Every pin on that IC will match your Wannien board. wannien 101v0 power supply schematic

Drop it in the comments. If you show me the top and bottom of the PCB, I can point you to the exact resistor values. If you’ve landed here, you are likely staring

Disclaimer: Power supplies contain lethal voltages in the primary capacitors (320V DC). Discharge them with a resistor before touching. Safety first. Official schematics for the "Wannien" brand are almost

Manufacturers like Wannien often buy OEM PCBs (Printed Circuit Boards) and put them in a silver perforated metal case. The "101V0" is likely a batch code or internal revision number, not a unique design. Forget searching for Wannien 101v0 schematic.pdf . Instead, open the unit and look for the PWM Controller IC .