TCL 55A360液晶电视不开机的故障维修
接修一台TCL 55A360液晶电视(T962A23机芯),故障表现为不开机,:通电不开机,测试供电正常,只有1.5V 在不停的跳动,查看打印信息显示 :
TXL:BL1:1ef924:56431c;FEAT:ADFD718C;POC:1;RCY:0;EMMC:0;READ:0;0.0;CHK:0;
TE: 130581
BL2 Built : 22:04:01, Jun 5 2018. \ntxl gcdb4151 - hui.an@droid09-sz
ADC Sample Value: 0x00000003
Customer Board ID = 0
set vcck to 1100 mv
set vddee to 1000 mv
set vddee enable AO_8 to high
set vddee enable AO_2 to high
set led AO_3 to high
hwid = 0
波轮洗衣机清洗图片大全
update_2layer_timing
DRAM reset...
init panel power
CPU clk: 1200MHz
DDR enable rdbi
DQS-corr enabled
DDR scramble enabled
DDR3 chl: Rank0+1 @ 768MHz
Training Err PGSR0: 0x8040007f.Retry...
樱雪抽油烟机价格查询
DX0GSR0: 0x00c73120....
DX1GSR0: 0x00c23120....
DX2GSR0: 0x00c73120....
DX3GSR0: 0x00c23020....
DX0GSR2: 0x31800000....
DX1GSR2: 0x31000000....
DX2GSR2: 0x32000000....
海尔空调故障代码F1
DX3GSR2: 0x30800000....
DX0GSR3: 0x00000000....
DX1GSR3: 0x00000000....
DX2GSR3: 0x00000000....
DX3GSR3: 0x00000000....
反复显示DDR 检测异常的信息,怀疑是DDR供电异常引起,代换UDPC故障已经,排除供电原因,确定问题在DDR或者CPU不良,或者过孔不良引起,先检查过孔,逐一测量发现CPU 到DDR有一路阻值比其他路的要微低几欧,用断线法确定是CPU这边的问题引起,代换U1C 后再测量发现阻值已经恢复正常,恢复割断的线后通电试机,已经已经可以开机正常,反复老化试机未见其他异常,维修完成。