https://devzone.nordicsemi.com/f/nordic-q-a/23434/cannot-make-nrf52840-preview-dk-pca10056-0-9-0-stop-despite-power-cutHi! I am trying to measure the current profile of a pca10056 board using an oscilloscope. I cut SB40, as per instructions in the User Guide and powered it using only a coin cell. To make sure that the power cut (SB40) was successful, I did not installen-USTelligent Community 13Tue, 11 Jul 2017 14:00:32 GMThttps://devzone.nordicsemi.com/thread/92088?ContentTypeID=1Tue, 11 Jul 2017 14:00:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:06b6ad2d-1968-4f3f-a706-2662116f83d7Elm<p>When adding the coin cell, connecting the 10ohm resistor and measuring the current, I got very nice results. The problem I had was probably because the SOC was powered through one or more input pins and their protection diodes.</p> <p>Sorry for the mistake. I should have remembered this; it has happened to me before.</p> <p>Elm</p><div style="clear:both;"></div>