https://devzone.nordicsemi.com/f/nordic-q-a/30424/nrf52840-pdk-debug-in-vtref-problemHello, May I please check if the following is correct? On the nRF52840-PDK board (v0.9.3, 2017.47), the &quot;VTref&quot; pin of the &quot;Debug In&quot; header is connected to VDD. Should this instead be connected to VDD_nRF, to track the nRF52840 supply voltage? Foren-USTelligent Community 13Tue, 13 Feb 2018 21:47:40 GMThttps://devzone.nordicsemi.com/thread/120766?ContentTypeID=1Tue, 13 Feb 2018 21:47:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b1ef94ce-805b-4c07-aff7-784c02ba597egarrulous<p>Thanks Martin.&nbsp; No damage appears to be being done; if re-work by hand is too difficult might just leave it for now.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/120745?ContentTypeID=1Tue, 13 Feb 2018 17:54:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:12e2e854-fe54-4105-a247-a764e5f9ce06MartinBL<p>Hi,</p> [quote user=""] Is it worthwhile to break the track connecting VTref to VDD, and hand-solder a connection to VDD_nRF?[/quote] <p>This is the easiest way to do it. Unfortunately you have found a usecase we didn&#39;t think of, and there is no better way.&nbsp;</p><div style="clear:both;"></div>