Purpose: to solve the 17-21 inch LCD monitor power failure maintenance problems Pin Definitions Yellow Line: DRAIN power control terminal connected to the original high-power MOS tube D pole. Black line: GND the module ground 300v then negative capacitance can be on the same line. Red: VCC module supply side the positive feedback received after the end of the rectifier winding capacitance continuity of supply voltage between 12-18V. White lines: FB regulator feedback then optocoupler 4 feet 3 feet to make sure optocoupler heat the earth is not hot then put the optocoupler shorted to ground heat while the 4-pin peripheral circuit is disconnected. ' Green Line: start start foot connected +300 V capacitor positive. Usage: 1. Remove the power chip (typically 8 feet) on the original board and switch (mos tube) 2. Check 300v capacitor there was the appearance on the load side of the capacitor is no drum kits there are problems on the first replacement 3. Check the load side there is no short circuit ad plate pressure plate etc. 4. Connect the module corresponding line and double check no wrong if you Connected the wrong cause the module to burst 5. Installed in the original radiator position note the insulation do not short-circuit 6. It is energized the measured voltage is not output there is no reason to check if the output Note: 1. Before using this module there is no need to detect short-circuit the cold side there is a short circuit in the first repaired if the need to replace the capacitor drum kits ignition coil circuit shorted Esen disconnected no prior on the module removed the original chip and module power mos tube this time the original switch in the middle of the electrode to heat to have voltage 300v voltage around. 2. Optocoupler 3 feet if not Connected the heat the heat please 3 feet to ground while the demolition of empty 4-pin peripheral circuit and the white wire to the position 4 feet.