中兴AX3000突然不开机，指示灯不亮，连接主串口发现卡在JUMP到内核的过程

中兴AX3000突然不开机，指示灯不亮，连接主串口发现卡在JUMP到内核的过程，已经检查过nand flash 和电源部分，请问问题可能出在哪里？

Boot SPI NAND
start read bootheader
start read secondboot
non secure boot
Jump
enter bootloader...

crpm init enter

ddr init enter, rate is 1333 Mbps
5ddr init done
serial init start
serial init done
SPI NAND
non secure uboot
backup header!!
Jump

enter bootloader...

crpm init enter
crpm init done
ddr init enter, rate is 1333 Mbps
5ddr init done
serial init start
serial init done
SPI NAND
non secure uboot
backup header!!

Jump

enter bootloader...

crpm init enter
crpm init done
ddr init enter, rate is 1333 Mbps
5ddr init done
serial init start
serial init done
SPI NAND
non secure uboot
backup header!!

Jump

下面是上电后打印的日志，在第二次JUMP就不动了