PPK2 stops working and get strange values on nRF Connect

[Samuele Forconi]

Hi,

suddenly our PPK2 stops working and we started to have strange values on nRF Connect  interface (current values in YA...).

This screenshot has been taken with a connected nRF52 board (that should consume a few uAmps).

I'm using nRF Connect v4.0 on Ubuntu Linux 22.04. 

I've already performed a firmware update by holding TP34+GND to enter in bootloader mode, but nothing has changed.

Is there anything that I could do to revive this PPK2?

[Priyanka]

Hi Samuele,

Do you have any other hardware connected to the DK, for eg any peripherals, etc?

Have you tried changing the cables?

When you power on the PPK2, does it light up?

Best Regards,

Priyanka

[Samuele Forconi]

No, we don't have any other hardware connected other than our nrf52832 board.

We have another PPK2 board and the other one with the same setup is measuring the correct current values.

I'm afraid something has messed up on the hardware...

[Priyanka]

After setting the PPK2 in bootloader mode, did you reprogram it when prompted?

-Priyanka

[Samuele Forconi]

Yes, after setting in bootloader mode, I have reprogrammed the PPK2 when nRFConnect asked me to reproram the board.

The reprogramming logs didn't show any errors and after that I was able to reconnect to the PPK2 in the Power Profiler app (but I get the wrong measures).

[Priyanka]

That looks strange. But in the screenshot that you attached, the device is still "Unknown". Is this screenshot after you re-programmed it?

Could you attach the ppk log?

-Priyanka