When looking at the schematic for this board, you will find four primary stages:
If the fuse is blown, always check the bridge rectifier and the main switching MOSFET for shorts before replacing it. Tips for Reading the Schematic 671w24h0d02a gp schematic
Working with the involves lethal voltages . The large primary capacitor can hold upwards of 400V DC even after the device is unplugged. Always discharge the main capacitor safely using a resistor before touching the board. When looking at the schematic for this board,