Symptoms:
The board powers up normally and enters the diagnostic screen when no SD card is inserted.
EEPROM can be flashed successfully.
However, when an SD card with a working system image is inserted, the board shuts down almost instantly during the boot process.
Power chip outputs drop to zero, and the green LED shows a faint, high-frequency blink.
I’ve already replaced the power management chip (PMIC), but the issue persists. At this point, I’m trying to determine whether it’s a deeper SoC-level fault or something else.
I documented the entire case in a short video for reference
https://youtu.be/8ee_RQ2tQwM?si=ZDZmVBWmVgqi6LOY
The board powers up normally and enters the diagnostic screen when no SD card is inserted.
EEPROM can be flashed successfully.
However, when an SD card with a working system image is inserted, the board shuts down almost instantly during the boot process.
Power chip outputs drop to zero, and the green LED shows a faint, high-frequency blink.
I’ve already replaced the power management chip (PMIC), but the issue persists. At this point, I’m trying to determine whether it’s a deeper SoC-level fault or something else.
I documented the entire case in a short video for reference
https://youtu.be/8ee_RQ2tQwM?si=ZDZmVBWmVgqi6LOY
Statistics: Posted by Kyrin — Sat Jun 28, 2025 8:39 am