So got an interesting one not sure where to look. I've fixed a few touchbars, but this one came is super clean for no power. Basically the problem is this device has 5 volts on DC in but it bootloops on one side of the board. When you plug in a USB connector to JB500 (left side port) you get 5 volts on DC in with about a 0.04 amp draw. When you plug in a connector to J3300 you get 5 volt bootloop 5 volt bootloop over and over again. Like I said, no evidence of liquid anywhere on the board. I reflowed both U3100 and U3200 just on the off chance they had a broken ball under them, but no change. Where do I look from here? DC in and PP3v3_G3H are both not shorted to ground.