The primary side of the board takes the mains AC voltage (usually 100V–240V) and converts it into low-voltage DC. Converts AC to high-voltage DC.
The ILPI-354 V.A is a widely used power supply and inverter board found in various flat-panel LCD monitors. This board is responsible for converting incoming AC power into the stable DC voltages needed by the logic board, as well as generating the high-voltage AC required to strike and illuminate the Cold Cathode Fluorescent Lamps (CCFLs) used for backlighting. Ilpi-354 V.a Schematic
If you are using the schematic to repair an ILPI-354 V.A board, several well-known failure modes are worth investigating. The primary side of the board takes the