I got this akai MPK 261. Had no power from USB. Optional Power adapter caused some light smoking, so unplugged and disassemble to get to the main board. There are two surface mount inductors near the power input. One look obviously damaged, removed both for replacement. Then there's this IC a few components away (pictured) that I can't identify. I've done plenty of plenty of surface mount component work, so replacing it isn't a problem. Any insight into what this could be would be greatly appreciated.