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Topic: DUE External Power Not Working (Read 725 times) previous topic - next topic


I have 2 authentic DUEs that I recently bought from the ardiono.cc store. Both will power up with a USB cable connected. Neither will power up with 12VDC connected to the power jack. The 12V power supply I'm using works with an UNO and it's current capacity is 18A. I can measure 12V at the Vin pin so I know it's at least working through the input filter and protection diode.

Has anybody had this issue with an authentic DUE? If so what's the solution?


I have no recollection of a similar topic for this issue with the power jack. IMO the best you can do is asking a refund to your arduino board reseller.


May 18, 2018, 10:36 am Last Edit: May 18, 2018, 10:48 am by OLMA

I have the same problem with my arduino dues. I ordered one due several weeks ago and that one works fine with 12V external Power supply. The dues that I ordered last week do not accept the 12V external power. I recoqnised that on the newer boards one electronic component near the 12V-plug is different to the older board. As described by r-wilder, the Vin-PIN gets 12V but all LEDs stay dark.

That suggests, that maybe all newer boards have this bug.
Dues were ordered at Conrad.

EDIT: At the 5V-PIN there are only 1.24 V
and on the 3.3 V-PIN only 0.45 V

Any idea?


Hi there, same problem here.

Genuine Arduino Due (not clone) bought sometime in May, external power supply via the DC power jack NOT working.


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