长虹LED32c2000i红灯闪烁-液晶电视
資深大佬 : 官修qq 9
故障 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 窜连,
插口con201正常开机电压数值,
ps-on-4.3V
dim-3V
bl-on-3.4V
gnd
gnd
gnd
gnd
12.35V
12.35v
12.35v


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 窜连,
插口con201正常开机电压数值,
ps-on-4.3V
dim-3V
bl-on-3.4V
gnd
gnd
gnd
gnd
12.35V
12.35v
12.35v




大佬有話說 (10)