https://devzone.nordicsemi.com/f/nordic-q-a/81300/power-issues-on-nrf5340-dkHI I have using nrf5340 DK for the past 7 months. Sometimes, The DK gets powered up only after 2-3 minutes after giving the power supply from the PC. Even after powerup, It takes some time to run the previous uploaded code. This has not happened everyen-USTelligent Community 13Mon, 08 Nov 2021 09:48:42 GMThttps://devzone.nordicsemi.com/thread/337859?ContentTypeID=1Mon, 08 Nov 2021 09:48:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f417a4f6-c481-4995-9e9a-536f28b73aa1Kenneth<p>If you have tried to shortcircuit the POWER switch to check that is not the problem, then the problem must be something else. Since this kit have worked previously it could have been damaged by ESD and/or other mechanical or electrical over stress. I suggest to get a new nRF5340DK for development.</p> <p>Kenneth</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/337595?ContentTypeID=1Fri, 05 Nov 2021 04:39:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fec7bf38-6819-469e-ac1e-08b512f2695fMr.NCK<p>hi Kenneth,</p> <p>I think there is no issue with the POWER switch. Because after Giving power it will take 5 min to stable for working automatically. I don&#39;t do anything on board while it takes time to start.</p> <p>Thanks &amp; Regards</p> <p>Navin Chakravarthy K</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/337089?ContentTypeID=1Tue, 02 Nov 2021 12:43:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0caa41b7-4e09-44de-bd9b-effd96578b78Kenneth<p>I believe this is a mecanical issue due to the POWER switch on the nRF5340DK. So please check if the POWER switch make a firm connection.</p> <p>Kenneth</p><div style="clear:both;"></div>