nRF5340 on-board JLink broken

[trembel]

Hi there,

I connected my nRF5340 PDK to an external target - which was unluckily defective.

Since the external board had its own power supply, there was now either an overvoltage or a short circuit at the programming header P20. The PDK got hot in the debugger when I noticed that something was wrong. Everything was immediately disconnected, but now nothing lights up anymore when I connect the PDK to the computer via USB.

The nRF5340 on the board itself is fortunately still intact (tested via the cell battery).

What is most likely to be defective: The jink-onboard or another component? If so, which would you check and replace first?

Best,

trembel

[Einar Thorsrud]

Hi,

It is difficult to say what could have been damaged. I suspect getting a new kit would be much cheaper than spending (potentially) a number of hours trying to find and fix the issue(s).