https://devzone.nordicsemi.com/f/nordic-q-a/83637/can-t-connect-to-debug-and-firmware-nrf9160-sica-b0Chip unresponsive voltage at DEC0 is 0.04v Chip nrf9160 SICA B0 Transfer the ticket to private, I will send the PCBen-USTelligent Community 13Thu, 27 Jan 2022 10:16:22 GMThttps://devzone.nordicsemi.com/thread/349918?ContentTypeID=1Thu, 27 Jan 2022 10:16:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:335113f3-fa20-471d-994a-9468c7ad0ba7H&#229;kon Alseth<p>Hi,</p> <p>&nbsp;</p> <p>Given that pulling the nRESET pin high makes the nRF9160 run, it can indicate a short or something pulling the pin low.</p> <p>Have you checked the current consumption of the nRF? When both pulling nRESET to VDD, and when leaving the pin unconnected.</p> <p>What is the VDD provided to the nRF9160?</p> <p>&nbsp;</p> <p>Kind regards,</p> <p>Håkon</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/349778?ContentTypeID=1Wed, 26 Jan 2022 13:48:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4d4e0880-8618-4bb1-9cd7-1947a5bb7685vasya<p>Q1: There were 3 boards made, there is a problem on all 3 boards<br />Q2: No. There on the bottom side nrf52840 so we did not warm up</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/349129?ContentTypeID=1Mon, 24 Jan 2022 07:39:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5e242dbe-2a23-49cb-81c7-b92372c744f8H&#229;kon Alseth<p>Could you answer the initial questions, given that the issue still occurs?</p> [quote user="hkn"]<p></p> <p>Q1: How many boards has this problem, and how many has been produced?</p> <p>Q2: Has the board been reworked (warmed up again) to see if the behavior changes then?</p>[/quote] <p>&nbsp;</p> <p>Kind regards,</p> <p>Håkon</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/348984?ContentTypeID=1Fri, 21 Jan 2022 14:41:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0af36bd2-3663-4a8f-a729-f6b69dbeab86vasya<p>nRESET pin - 0.07 V<br />ENABLE contact - 3.26v I filed with nrf52840</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/347934?ContentTypeID=1Mon, 17 Jan 2022 08:24:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c5cbb687-562b-48bb-a77e-5b4dc37b47d8H&#229;kon Alseth<p>A pull-up on the nRESET pin is not necessary, as there is one internally in the nRF. Could you check the voltage on the ENABLE pin to see if this is set high?</p> <p>&nbsp;</p> <p>Kind regards,</p> <p>Håkon</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/347818?ContentTypeID=1Fri, 14 Jan 2022 15:57:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:298930a6-8e51-4fdd-ad9a-d0cd3651cfd8vasya<p>I solved the problem. It is necessary to poolup nReset output to plus voltage. I understand this problem only in revision B0</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/347785?ContentTypeID=1Fri, 14 Jan 2022 13:53:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1ac00e0b-e2a1-4e7e-acd6-c51ffeac819bH&#229;kon Alseth<p>Hi,</p> <p>&nbsp;</p> <p>Q1: How many boards has this problem, and how many has been produced?</p> <p>Q2: Has the board been reworked (warmed up again) to see if the behavior changes then?</p> <p>&nbsp;</p> <p>Kind regards,</p> <p>Håkon</p><div style="clear:both;"></div>