Debugging Mode Only When Supplied With External Supply

[Burnie Barren]

Hello,

I am running ble_app_beacon on nRF52 DK. To check functionality, I try with all power sources in turn, i.e. USB cable, battery and external source. Today I realized that only when supplying with external source, the board starts in the debugging mode, i.e. draws an additional 1mA. When I press the reset button it returns back to normal but this did not happen before today. Why do you think this is the case and how can I fix this?

Thank you for your attention.

Burnie Barren

[Burnie Barren]

In addition to this, from time to time current supplied by the external sources reaches 100 mA limit and LD5 blinks per sec. I am saying 'from time to time' because literally I just turn off the source then turn it back on. It either hits 100 mA, debugging mode or runs smoothly. In all of these cases, beacon package is successfully sent. I kept soldering and desoldering the bridges SB11, 12 and 29. I feel like I have caused a loose contact or short somewhere but I have checked all that comes to my mind, negative. I would be glad if someone could shed some light on this.