Help with Pro Kit

Hi, I need help with a AirGradient Pro Kit with board version 3.3. I’ve built two of these that work and one of these that doesn’t work. How can I figure out what’s broken or screwed up?

When I power it on, the screen doesn’t turn on and I don’t see the wifi network. If I move a D1 from one of my working units it does the same thing. If I move the D1 from my not working until to a working one, it works.











I think this one the pins are soldered the wrong way. Take it out and see if it works then.

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Amazing, removing it allows it to boot. Thank you so much!!