A large, high-voltage electrolytic capacitor (usually rated at 400V or 450V, between 47µF and 120µF). It smooths the pulsating DC into a stable high-voltage DC rail (roughly 310V to 340V depending on local mains voltage).
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A very wise safety tip from the Russian forum (rom.by) is to use a "dim bulb tester" (a 100-watt incandescent lamp in series with the AC input) when first powering up a repaired power supply. This limits current in case of a short and prevents catastrophic damage. wannien 101v0 power supply schematic free
The (often cataloged alongside manufacturer code E88653 and the 94V-0 flammability rating) is a foundational switched-mode power supply (SMPS) platform. Used across various consumer and industrial applications—ranging from ATX computer enclosures and notebook adapters to LCD monitors and TV boards—this versatile circuitry is highly sought after by bench technicians and electronics hobbyists. Finding a free, explicit manufacturer schematic for legacy boards can be challenging, but understanding its universal design topology unlocks seamless troubleshooting and repair. 1. Anatomy of the Wannien 101V0 Power Supply Block
If you’ve landed on this page, chances are you are staring at a faulty Wannien 101V0 power supply. Whether it’s a dead LCD monitor, a non-responsive CCTV power box, or an industrial display unit, the Wannien 101V0 is a common yet elusive piece of hardware. The golden ticket to repairing it is, of course, the . And you want it for free. This link or copies made by others cannot be deleted
The heart of any SMPS is its PWM (Pulse Width Modulation) controller. Find the IC's part number on the board and search for its datasheet. The datasheet typically includes a reference application circuit, which is often very close to the actual board layout. For the Wannien 101V0, look for chips like the TSM101 or common eight‑pin PWM controllers like the UC3842 family.
: Frequently found in LCD monitors (like the Wan Nien 101VO series), industrial DIN rail systems, and some ATX power supply platforms. Try again later
Features a fuse (typically 2A–3.15A) and a varistor (MOV) to protect against voltage spikes.
The issue lies before the capacitor. Check the AC cord, switch, fuse, filter chokes, or bridge rectifier.
Wannien is a Chinese OEM manufacturer specializing in switching power supplies. The model number typically refers to a compact, open-frame or enclosed switching power supply. You will generally find it in: