LED 1 on nRF5340 is not lighting

[Sudhir Foujadar]

Hi,

I am using sample Blinky program to blink LED1. But LED1 not flashing.

Let me know what can be issue.

Regards

Sudhir

[Priyanka]

Hi Sudhir,

Have you checked whether the LED1 is working? Are you using the blinky sample in the nRFConnect SDK? Have you made any changes to the sample? Are you using the nRF5340DK?

Best Regards,

Priyanka

[Sudhir Foujadar]

Hi Priyanka,

Development board is nRF5340DK.

When used previously the LED was working, now all of sudden its not working. 

yes i am using Blinky example from nRF SDK and did not make any changes to code.

I traced down to hardware it seems that i not getting VDD power and VDD power is controlled by U4.

So input to U4 i am getting the supply but no output. 

Regards

Sudhir Foujadar

[Priyanka]

Hi Sudhir,

Are all the switches in the proper positions? If so, then this looks like your U4 is damaged and you need a new component.

-Priyanka