新手求助海信led49k300u开机无图像

naszl

有打印信息001: C:\Users\Administrator\Desktop\Print.log

002: COM3, BaudRate:115200 bps, RXD: VGA->12,TXD: VGA->15,

Bootrom start

Boot from eMMC

Starting fastboot ...

System startup

Fastboot 3.3.0 (gfkfcmo@ubuntu-CI-1) (Oct23 2015 - 14:12:14)

Fastboot:      Version 3.3.0

Build Date:    Oct 23 2015, 14:12:26

CPU:           Hi3751v600

Boot Media:    eMMC

MMC/SD controller initialization.

MMC/SD Card:

   MID:         0x15

   Read Block:  512 Bytes

   Write Block: 512 Bytes

   Chip Size:   3728M Bytes (HighCapacity)

   Name:        "4FPD3"

   Chip Type:   MMC

   Version:     4.0

   Speed:       25000000Hz

   Bus Width:   8bit

   Boot Addr:   0 Bytes

The DDR memory layout:

     page table: 0x0c000000 - 0x0c400000 4 MiB

          stack: 0x0c400000 - 0x0c800000  4MiB

    global data: 0x0cbfffc4 - 0x0cc00000 60 Bytes

         malloc: 0x0cc00000 - 0x10c00000 64 MiB

          .text: 0x10c00000 - 0x10c7f908 510.3 KiB

           data: 0x10c7f908 - 0x10d98e44  1.1MiB

Boot Env on eMMC

   Env Offset:          0x00100000

   Env Size:            0x00010000

   Env Range:           0x00010000

BootMode = MEM:[1],DC

Read LEDMODE ret = 10 or u32CheckWord = 0

System suspend.

======== [MCU PARAM] ========

DBGMASK: 0x00000001

SUSPENDTYPE: 0x00000000

GPIO POWER KEY: 0x00000000

GPIO LEVEL: 0x00000000

0x0000FFFF:waittime

IRTYPE: 0x00000000

IR NUM: 0x00000002

IR KEY: 0x639CFF00

IR KEY: 0xF20DBF00

LSADC ZERO: 0x000000FC

LSADC channel A enable

LSADC channel B enable

LSADC GLITCHSAMPLE: 0x00000005

LSADC TIMESCAN: 0x00000258

DATA_LASDC_POWERKEY0: 0x00000020

LSADC POWERKEY0: 0x00000000, 0x000000C0

LSADC POWERKEY1: 0x00000000, 0x000000C0

LSADC POWERKEY2: 0x000000FF, 0x000000FF

LSADC POWERKEY3: 0x000000FF, 0x000000FF

CUSTOM: Others.

light init

light off

lsadc:6bit,data_delta=8,enabledeglitch,power down,continue scan

set gpio DIR for output

set gpio level

set gpio DIR for output

set gpio level

======== [MCU Init Ready] ========

Power down ARM ===>

Reset cpu ===>

Set MCU to 24MHz ===>

Config bus core idle state ===>

Test bus core state ===>

Power down DDR ===>

======== [ARM suspend Ready] ========

Wait for 2s ...

======== [Waiting for Powerkey] ==

sqjd

等待电源按键命令

naszl

没有开机画面，用U盘强刷也没反应。

家电维修888

屏幕坏了断开半边软排线试下

naszl

家电维修888 2021-3-4 18:05
屏幕坏了断开半边软排线试下

屏幕坏了我用tv160试机那。

opopopfffgh

屏坏了就只能换，或者刷数据。

naszl

我就想修上这块板，其实也不用，用U盘刷机之前好使了过2天又坏。现在刷不进去了。