The product is broken

[1658096323]

nRF52840DK ：Plug in the power and no response. 

switch：ON

[awneil]

1658096323 said:

Plug in the power

What power are you using? Where did you plug it?

1658096323 said:

no response

Response to what?

What "response" were you expecting?

Have you followed the instructions in the User Guide?

1658096323 said:

switch：ON

Which switch?

Note that there is also a "Power Source" Switch (SW9), and an "nRF only" switch (SW6) - are you sure you have the correct one ?

[1658096323]

power supply：USB，

SW8：ON ,  

SW9: VDD,

SW6:DEFAULT

[1658096323]

Return to normal

[awneil]

Do you mean it's now working?

If so, please explain what you did to fix it - for the benefit of future readers who may have a similar problem.

And Verify the Answer: