接修一台长虹LED32C2000i液晶电视,故障表现为开机红灯闪烁,电源板板号XR7.820.287V1.2   HSU25D-1M6,检查电源电压 跳动,测量D401  HBR3100击穿 ,用SR5100代换,测量Q407   ME15N10-G击穿,用D254代换,开机图像正常,测量灯条电压27-29V 串连,插口CON201正常开机电压数值(供大家参考):
PS-ON-4.3V
DIM-3V
BL-ON-3.4V
GND
GND
GND
GND
12.35V
12.35V

12.35V