https://devzone.nordicsemi.com/f/nordic-q-a/22849/nrf52840-power-failHi Engineers! We made our own ten (10) PCB&#39;s with nRF52840 MCU onboard fully according to &quot;Circuit configuration no. 3&quot;: 1. LDO only mode (VDDH connected to VDD connected to +3.3v). 2. EXTSUPPLY (UICR) bit = 0. all tens MCU&#39;s do not start.en-USTelligent Community 13Sat, 17 Jun 2017 06:05:28 GMThttps://devzone.nordicsemi.com/thread/89832?ContentTypeID=1Sat, 17 Jun 2017 06:05:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b7b6b5b2-f629-4c07-83f1-011b9cd2efffOleg<p>Problem Solved by soldering all N.C. capacitors (DEC2 and DEC5) to 104.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/89833?ContentTypeID=1Sat, 17 Jun 2017 02:21:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:aa6397f1-2ea9-4c8c-aac4-b67a4722cf97Oleg<p>Another problem, QIAA case is VERY expensive for our Fabric. if any schedule to use another one package in the future ? actualt case dont fit us anyway and should be changed.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/89830?ContentTypeID=1Fri, 16 Jun 2017 15:56:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9406a5fb-2875-4940-b8e8-b674228bd06bOleg<p>attached here</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/89831?ContentTypeID=1Fri, 16 Jun 2017 15:56:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0181db64-2255-41bd-985e-9da5b0921141Oleg<p>here are TOP PCB layer and SCHEMA.</p> <p><a href="https://devzone.nordicsemi.com/cfs-file/__key/communityserver-discussions-components-files/4/PCB_5F00_BLE.JPG">PCB_BLE.JPG</a></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/89829?ContentTypeID=1Fri, 16 Jun 2017 14:20:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5f6f6f4a-8a43-43ff-9723-f647e227a67fFormerMember<p>Could you upload the schematic and layout?</p><div style="clear:both;"></div>