Solve the 15-21 inch lcd monitor maintenance problems.
1 foot yellow line: Drain, power control side, then the high-power . Generally the middle of the power feet;
black line or line: Gnd, module ground 300v, then the negative , the same line can Directly connected to a large filter negative;
3 feet red line: VCC, the module side, then the feedback winding terminal after the positive, continuous , the voltage between 12-18V;
4 feet white line: FB, voltage feedback, then optocoupler 4 feet, please check the optocoupler 3 , not heat, then put the optocoupler short to the hot ground, while the 4-pin peripheral circuit disconnected; 5 feet green line: pin, then + 5 feet green line: pin, then +