TCL L48E5000E红灯亮，开机后红灯灭不亮机修复过程

dahldmzi

TCL L48E5000E红灯亮，开机后红灯灭不亮机修复过程，经测试电源板完好，主板：40-MT01E0-MAH2G,经查主板有一路1.5v电压不足，降为1.2v，换1117-15后电压正常，还是不亮机，用RT809F链接电脑，显示打印信息，最好“starting kernel .....     uncompressing linux......    CRC error      system  haited.......”明显是系统损坏，用U盘升级后电视正常。附上开机打印信息供同行参考。程序和维修资料非常大不便上传，有需要的同行在T宝搜索"MT01机芯维修资料及软件"就能找到。


2016-3-21, 17:34:21
COM4, BaudRate:115200 bps, RXD: VGA->11,TXD: VGA-> 4, Printed by RT809F:

Boot-
DRAM Channel A Calibration.
Byte 0 : DQS(4 ~ 36), Size 33, Set 18.
Byte 1 : DQS(0 ~ 35), Size 36, Set 15.
DRAM A Size = 128 Mbytes.
Boot

Start Pmain

0x00003268
NID=0x9580f12c
LZHS addr:0x00100040
LZHS size:0x000670e8
LZHS checksum:0x00000095
Boot

Start Lmain



MT5365 Boot Loader v0.9
MUSB none SoftReset 0x29424 = 0x01030000.
MUSB pBase = 0xF0029000 init ok.
MUSB none SoftReset 0x29424 = 0x01030000.
MUSB pBase = 0xF002E000 init ok.
Boot reason: A/C power on!!
Load VGA internal EDID.................
DUMMY READ EDID DATA FROM EEPROM
Load HDMI internal EDID.................
SIF_Master0: new design
SIF_Master1: old design
Boot reason: A/C power on!!T8032 init A/C on case loader stage...
Load T8032 FW (addr: 0x  d54ca0, size: 24576)success!!
LDR_FlashCopy 0xf010 0x30a80 0x80
Switch NAND pinmux
Detect NAND flash ID: 0x9580F12C
Detect MT29F1G08AAC/ABADA NAND flash(SLC): 128MB
NAND_BDM_Mount: Partid=0, offset=0x0, size=0x100000
[BDM] Partition: 0, Bad Block Count: 0


Do USB upgrade
USB: Vbus turn up time = 253 ms.

No USB device.
USB upgrade stop
Boot reason: A/C power on!!
---------test LYQ check eeprom boot-----------
Boot reason: A/C power on!!Org:0x10 Flags:0x10



---------test LYQ check eeprom boot-----------
Disable VGA wakeup
Standby   
DRAM Channel A Calibration.

Byte 0 : DQS(4 ~ 37), Size 34, Set 18.
Byte 1 : DQS(0 ~ 5), Size 6, Set 0.
DRAM A Size = 128 Mbytes.
Boot

Start Pmain

0x00003268
NID=0x9580f12c
LZHS addr:0x00100040
LZHS size:0x000670e8
LZHS checksum:0x00000095
Boot

Start Lmain



MT5365 Boot Loader v0.9
MUSB none SoftReset 0x29424 = 0x01030000.
MUSB pBase = 0xF0029000 init ok.
MUSB none SoftReset 0x29424 = 0x01030000.
MUSB pBase = 0xF002E000 init ok.
SIF_Master0: new design
SIF_Master1: old design
T8032 change to loader stage...
LDR_FlashCopy 0xf010 0x30a80 0x80
Switch NAND pinmux
Detect NAND flash ID: 0x9580F12C
Detect MT29F1G08AAC/ABADA NAND flash(SLC): 128MB
NAND_BDM_Mount: Partid=0, offset=0x0, size=0x100000
[BDM] Partition: 0, Bad Block Count: 0


Do USB upgrade
USB: Vbus turn up time = 235 ms.

No USB device.
USB upgrade stop


---------test LYQ check eeprom boot-----------
Org:0x10 Flags:0x10



---------test LYQ check eeprom boot-----------


------[_LdrCheckEepromBoot] power mode = standby,ir or button wakeup---------


A_Mute GPIO=326 release
AMP mute GPIO=ca release
Reset Demod GPIO=320, 0->1

NAND load lzhs header from 0x40000 to dram(0xfe0030), size=2048
Decompression uboot to 0x00f00000...


NAND load image from 0x40000 to dram(0xfe0030), size=0x35b47
LZHS hardware decode start
LZHS hardware decode done
Starting image...




U-Boot starts...


NAND Flash:  Detect NAND flash ID: 0x9580F12C
Detect MT29F1G08AAC/ABADA NAND flash: 128MB
128 MiB
Booting sequence is from NAND Flash
Correctable ECC: 1 bit-flip found in page 0x225, Sector 0
In:    serial
Out:   serial
Err:   serial
SIF_Master0: new design
SIF_Master1: old design
eeprom para:140(6ffc90) u4MemLen:0x00000009
eeprom para:149(6ffc84) u4MemLen:0x00000009
eeprom para:152(6ffc78) u4MemLen:0x00000009
eeprom para:140(6ffc4c) u4MemLen:0x00000009
eeprom para:149(6ffc4c) u4MemLen:0x00000009
eeprom para:152(6ffc4c) u4MemLen:0x00000009
eeprom para:140(6ffec0) u4MemLen:0x00000009
Hit any key to stop autoboot:  0
Partition rootfsA defined at mtdparts:
ID:6, Offset:0x00800000, Size:0x00500000


Loading from nand0, offset 0x400000
Correctable ECC: 1 bit-flip found in page 0x841, Sector 0
Correctable ECC: 1 bit-flip found in page 0x854, Sector 0
Correctable ECC: 1 bit-flip found in page 0x865, Sector 1
Correctable ECC: 1 bit-flip found in page 0x890, Sector 1
Correctable ECC: 1 bit-flip found in page 0x893, Sector 1
Correctable ECC: 1 bit-flip found in page 0x8B0, Sector 0
Correctable ECC: 1 bit-flip found in page 0x8B7, Sector 0
Correctable ECC: 1 bit-flip found in page 0x8B8, Sector 1
Correctable ECC: 1 bit-flip found in page 0x8BE, Sector 1
Correctable ECC: 1 bit-flip found in page 0x8C3, Sector 0
Correctable ECC: 1 bit-flip found in page 0x8F0, Sector 0
Correctable ECC: 1 bit-flip found in page 0x92B, Sector 0
Correctable ECC: 1 bit-flip found in page 0x946, Sector 0
Correctable ECC: 1 bit-flip found in page 0x953, Sector 1
Correctable ECC: 1 bit-flip found in page 0x97B, Sector 0
Correctable ECC: 1 bit-flip found in page 0x98B, Sector 1
Correctable ECC: 1 bit-flip found in page 0x9A2, Sector 0
Correctable ECC: 1 bit-flip found in page 0x9B3, Sector 0
Correctable ECC: 1 bit-flip found in page 0x9CF, Sector 0
Automatic boot of image at addr 0x00008000 ...
## Booting kernel from Legacy Image at 00008000 ...
   XIP Kernel Image ... OK
OK


Starting kernel ...


Uncompressing Linux.......................................................................................



crc error



-- System halted     

家电维修888

谢谢楼主的维修案例。

harbap

居然还有启动打印信息，Linux系统，内核加载，好牛逼呀

良科电器

谢谢 分享哦