An onboard PWM control integrated circuit drives the gate of a high-voltage power MOSFET.
On the secondary side, the transformer output is rectified by two Schottky diodes in parallel (e.g., STPS20L45CT). The 12V rail is smoothed by several 1000µF/25V capacitors.
: Carbon scoring and dust buildup can create conductive bridges across the high-voltage side. Use 99% isopropyl alcohol and a static-safe brush to scrub the PCB down after replacing components. wannien 101v0 power supply schematic repack
: Houses an Integrated Circuit (IC) voltage regulator tasked with dropping the 12V–15V raw input down to a clean, stable 5V DC output to run digital logic, microcontrollers, and EEPROMs.
Field technicians using the 101V0 in custom repacks or alternative ATX conversions often notice a trace terminal labeled or B+/2 Midpoint . An onboard PWM control integrated circuit drives the
In this article, we will dissect the Wannien 101V0 circuit design, explain why a repack is valuable, provide a step-by-step guide to troubleshooting, and discuss how to safely repack the unit for long-term reliability.
: Due to continuous thermal cycling from the display's inverter circuits, look for cracked or oxidized solder connections under a magnifying glass. Clean the old resin away and reflow the high-heat areas using fresh leaded or lead-free solder containing a premium flux core. Advanced Troubleshooting Tips : Carbon scoring and dust buildup can create
These "repacks" are often found in the depths of forums like Badcaps.net, EletrônicaBR, or similar, where users share their findings.
A high-capacity bulk capacitor (typically rated at 450V to withstand peak AC fluctuations) smooths out the rectified output to generate a stable high-voltage DC bus line (~170VDC for 120VAC lines, or ~340VDC for 240VAC lines). 3. Pulse Width Modulation (PWM) and Switching
