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TCL 55A360液晶电视不开机的缺点培修

接修一台TCL 55A360液晶电视(T962A23机芯),缺点体现为不开机,:通电不开机,测试供电反常,只要1.5V 在不停的跳动,检查打印消息显示 :

TXL:BL1:1ef924:56431c;FEAT:ADFD718C;POC:1;RCY:0;EMMC:0;READ:0;0.0;CHK:0;

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

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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: 0x8007f.Retry...

樱雪抽油烟机多少钱查问

DX0GSR0: 0x00c73120....

DX1GSR0: 0x00c23120....

DX2GSR0: 0x00c73120....

DX3GSR0: 0x00c23020....

DX0GSR2: 0x31800000....

DX1GSR2: 0x31000000....

DX2GSR2: 0x32000000....

海尔空调缺点代码F1

DX3GSR2: 0x30800000....

DX0GSR3: 0x00000000....

DX1GSR3: 0x00000000....

DX2GSR3: 0x00000000....

DX3GSR3: 0x00000000....

重复显示DDR 检测意外的消息,疑心是DDR供电意外惹起,代换UDPC缺点曾经,扫除供电要素,确定疑问在DDR或许CPU不良,或许过孔不良惹起,先审核过孔,逐个测量发现CPU 到DDR有一路阻值比其余路的要微低几欧,用断线法确定是CPU这边的疑问惹起,代换U1C 后再测量发现阻值曾经复原反常,复原割断的线后通电试机,曾经曾经可以开机反常,重复老化试机未见其余意外,培修实现。

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