Thanks for the update, and glad to hear that it finally worked. Sorry that you had to go through the trouble. I also thought about the possibility of some parts being doa, but I don’t see any strong evidence. Before the SMT version became available, we have soldered and assembled 80+ DIY kits from the same batch of parts, and none of them had any issue. In many cases I’ve seen where the users report their build didn’t work, the soldering quality was a major issue. But from the pictures you’ve posted, your soldering seems to have good quality. So I am also curious what caused the problem in the first place.