[SOLVED] Is my XU4 dead?

[jalcaid001]

It has been working for 2+ years as a server
I did a reboot from a telnet session and never came up. Nothing on HDMI output.

What could have been wrong? IS there a way to know for sure if it's dead?

[odroid]

Check the red and blue LED status on the board first.
The red LED must be solid on once the power source is connected.
The blue LED is solid on in the u-boot stage.
The blue LED is flashing like heartbeat once the Linux kernel is running.

Also check 5V/4A PSU output voltage if you have a DMM.

[jalcaid001]

I only see red LED. Blue led never comes up. Could it be an issue with the SD card, or it's HW

DMM shows 5.4 V. Unfortunately, my DMM doesn't measure the current accurately (I have same problem with other power adaptors)

[odroid]

Flash this latest OS image to your SD card with Etcher to narrow down root causes. Also check the boot mode selection switch position too.
https://wiki.odroid.com/odroid-xu4/os_i ... e/20220522

[jalcaid001]

It was the boot select switch
I think it was in the middle position (nor SD, nor emmC) before I did the reboot (probably I moved it inadvertently) . Then, it never came back.
I guess the switch is only useful at boot time

Thanks!

[rooted]

I've had this happen, I've also barely knocked the emmc module loose and thought my device was dead.