Check the secondary windings of the inverter transformer using a multimeter set to the resistance (Ohms) scale. If the board has two transformers (or a dual-winding transformer), compare the resistance of the high-voltage windings. They should be within a few ohms of each other. If one measures open or significantly different, the transformer is defective.
Sites like MoreTVParts often stock units pulled from monitors with broken screens. Dell SE2216H Power Supply Board ILPI-354 (P/N - eBay Ilpi-354 V.a Schematic
This section is the most common failure point. It uses a driver IC (like the DP860EGN ) and MOSFETs (like the PDR6912 ) to boost voltage for the LED strips. 🔍 Common Repair Scenarios Check the secondary windings of the inverter transformer
The output side of the inverter transformer produces extremely high AC voltages. Do not attempt to measure this voltage with a standard multimeter, as it can damage your meter or cause a severe shock. If one measures open or significantly different, the
This is the entry point for AC power. The schematic details components like the fuse, varistors (for surge protection), and the bridge rectifier that converts AC to a rough DC signal.
You can find these boards on 365 Power Supply ($19.00 39.00 ), AliExpress , and eBay ($20.00).