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NRF52833 DK not powering up

Hi,

We have 4 NRF52833 DK being used for our development work.

Among that, 3 of them have stopped working and are not powering up.

They power up some times when connected to a power source for a long time, after 30 minutes or so. But this is rare.

Its very frustrating behaviour. We even got a new DK just couple of weeks back and it is also showing the same behaviour.

What could be the reason for this?

Thank you,

Chethan

Parents
  • Please fill me in on how exactly you are powering these boards? Do you have to connect them to a computer with a USB cable for ~30 minutes before they power up, or are you using an external power source of some kind? If you're using an external power source, how much voltage are you applying to the nRF52833 DKs, and what header/input are you applying this voltage to? Are you able to capture this high-frequent sound on video by chance?

    Best regards,

    Simon

Reply
  • Please fill me in on how exactly you are powering these boards? Do you have to connect them to a computer with a USB cable for ~30 minutes before they power up, or are you using an external power source of some kind? If you're using an external power source, how much voltage are you applying to the nRF52833 DKs, and what header/input are you applying this voltage to? Are you able to capture this high-frequent sound on video by chance?

    Best regards,

    Simon

Children
  • Hi Simon,

    The boards are connected to a laptop with a USB cable for ~30 minutes. Once it powers up, it works fine for the complete day. After a period of inactivity, this occurs again.

    Connecting directly to a power plug via a usb adapter also does not power up the board. We have not tried this for long duration like above.

    I will try to capture the sound when it occurs again.

    Thank you,

    Chethan

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