Electrolytic capacitors in the secondary stage are prone to bulging or leaking, causing intermittent power or no-display issues.
AC LIVE ----[ FUSE ]----[ BRIDGE ]----+----[ 400V CAP ]----+------+ | | | | | | AC NEUTRAL -----------------------------+ | | | | [Snubber] [Transformer Primary] | | | | +-------------------------------------------------------+ | | | | +------------+ | +---| DRAIN | | | | | HV Bus ---| VDD PWM |<---[ Aux Winding ]-------(Feedback)-------+--+ | | +---| VCC GND |---+---[ Rsense ]--- GND | +------------+ | | | [Startup R] | | | +--------------------+ wannien 101v0 power supply schematic exclusive
: Converts high-voltage AC input into stable low-voltage DC. Inverter Section Electrolytic capacitors in the secondary stage are prone
Smooths the DC output. Swollen or "leaky" capacitors here are the #1 cause of "no power" or "flickering display" issues. 🔍 Common Repair & Troubleshooting Swollen or "leaky" capacitors here are the #1
), varistors for surge protection, and X/Y capacitors to filter electromagnetic interference. Rectification: