https://devzone.nordicsemi.com/f/nordic-q-a/60223/nrf5340-on-board-jlink-brokenHi 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 inen-USTelligent Community 13Thu, 16 Apr 2020 12:02:34 GMThttps://devzone.nordicsemi.com/thread/244973?ContentTypeID=1Thu, 16 Apr 2020 12:02:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:19f5e3e4-7ab3-46d2-b7b2-2a17813b46a0Einar Thorsrud<p>Hi,</p> <p>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).</p><div style="clear:both;"></div>