DC power jack question

[snz728]

HI

I am a noob learning as I go and appreciate any assistance.

I had a Neutrino that had no power to the board.  I bumped my mutimeter into both positive lugs of the DC jack and it fired up.  I soldered a jumper to the two + lugs of the dc jack:  the battery snap and the dc power and now it works fine.

What did I do?  Why did it not work before and now work with a jumper?

[gtr2]

Because you wired the board to the battery +.  It breaks contact when a jack is inserted and disconnects the battery.

https://www.smallbearelec.com/catalog/DCjack.jpg

[snz728]

Thanks I appreciate the answer