I believe you might need to check that the capacitors underneath the AtomaHawk board are bent over so that they do not come into contact with the Atomahawk.
Especially the capacitors top left under the AtomaHawk. I just ran into this problem myself.
/Mike
On Mon, 2019-04-01 at 07:12 -0700, pizzicato2007@... [korgpolyex] wrote:
No real rush, I am having a second set of eyes go over it with me this weekend, so I can actually learn to solder better as well.