本帖最后由 cjt 于 2021-5-22 10:31 编辑
长虹UD42C6000iD,ZLS47H-iS机芯,二次开机主板1.2V、1.5V、1.8V、3.3V、5.1V、12V电压都正常,就是背光、屏幕无反应,已知电源板、背光100%完好,查看打印信息如下:
2021-5-22, 8:8:24
COM4, BaudRate:115200 bps, RXD: VGA->11,TXD: VGA-> 4, Printed by RT809H:
UART_115200
[AT][MB][start sb][0]
AC_ON
AutoDQS0-[456789ABCDE][56789ABCDE][3456789ABCD][3456789ABC]-[0x7899]
AutoDQS1-[456789ABCDE][56789ABCDE][3456789ABCDE][3456789ABCD]-[0x8899]
BIST0-OK
BIST1-OK
_U[AT][MB][start ub][347]
U-Boot 2011.06-svn31 (Jun 18 2014 - 16:42:57)
CPU : Nike
Board: BD_MST049B_10AQV_NIKE
Hello U-Boot
DRAM: 256 MiB
SPI: Flash is detected (0x0B01, 0xC8, 0x40, 0x15)
spi_init: cfg_env_offset: 0x1e0000, at 560
uboot held at [2ecddf60~30000000]
Now running in RAM - U-Boot at: 2f100000
MMC: [ eMMC_CheckR1Error() ] eMMC Err: eMMC_ST_ERR_R1_7_0
0x2FA8F614: 0Dh 02h 00h 09h 80h 09h 00h 00h 00h 00h 00h 00h 00h 00h 00h 00h | ................
[ eMMC_CMD13() ] eMMC WARN: CMD13 check R1 error: 80000A07h, retry: 1
eMMC retry by DATA_SYNC: 0h, ori:51h
[ eMMC_FCIE_PollingEvents() ] eMMC Err: 2000000 us, Reg.0000h: 0002h, but wanted: 4800h
[ eMMC_CMD18_MIU() ] eMMC WARN: CMD18 Reg.12: FF60h, Err: 80000005h, Retry: 1
eMMC Warn: slow SDR clk to 3h
看不懂哪里问题,请高手指点一二
此板是网上购买,用别的板子换上有显示,背光亮,有开机音,用这个二次开机无反应,但对比两个板子供电一样。
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