Power issues on NRF5340 DK

[Mr.NCK]

HI

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 every time. Only after the long time gap, that thing will happen. After starting all are working properly So, I need to know what type of issue is this?
Is that issue because of hardware or software?

Thanks & Regards

Navin Chakravarthy K

[Kenneth]

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.

Kenneth

[Mr.NCK]

hi Kenneth,

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't do anything on board while it takes time to start.

Thanks & Regards

Navin Chakravarthy K

[Kenneth]

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.

Kenneth