One more detail, I made a jump on U22, it didn't work, but I made some measurements on the passive components around U22 and verified that Diode D4 is showing a short, I'll try to lift it to confirm. The other end of D4 doesn't go to ground. I tried to find the TinySA ULTRA electrical schematic, without success. Where can I get the TinySA ULTRA schematic?
