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

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...
DX0GSR0: 0x00c73120....
DX1GSR0: 0x00c23120....
DX2GSR0: 0x00c73120....
DX3GSR0: 0x00c23020....
DX0GSR2: 0x31800000....
DX1GSR2: 0x31000000....
DX2GSR2: 0x32000000....
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。