tufelkinder,

Correct, it’s a switching converter, the MAX17640. 5V is not powering up (getting ~2V out) and then the 3.3V LDO is not powering up.

I put an older variant daisy-chained board before and after the newer board. Both of the older ones come up, but the newer one doesn’t.

I will check soldering disturbances and put my scope on the input line to see if there’s a lot of noise. Thank you!

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