DUE External Power Not Working

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.

Hello,

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.

Seems always the same issue withe the new version :o :

https://forum.arduino.cc/index.php?topic=551534.0