nRF54L15-DK USB connection not working anymore

[dkkeller]

Hey, 

the USB connection to my nRF54L15-DK isn't working anymore. 

It is not showing up in nRF Connect Desktop and I can't find it under /dev/tty... or /dev/cu...

The VBUS voltage is 5V, e.g. on P3. 

I swapped cables, changed USB ports, powered things off and on... without any luck.

Is there anything else I can try?

Is there a recovery mode for the SEGGER J-Link OB Programmer/debugger (nRF5340)?

Thanks in advance. 

[Menon]

Hello,

Have you tried using nrfjprog or nrfutil to recover the device? Is the device detected by either of these tools? Also, try connecting the DK to a different PC to rule out any issues with your current system.

What version of the DK are you using? When you power it on, do the LEDs light up correctly? Additionally, what application is currently running on the DK?

Please note that, unfortunately, a dedicated recovery mode for the debugger is not available.

Kind Regards,

Abhijith

[dkkeller]

Found the problem. The VDDM CURRENT MEASURE port (P6) was missing (probably happened during transportation), so there was no VDDM <-> VDDM_nRF connection. Soldering it back in place fixed the problem ;)