Inhaling Fumes: Soldering PCBs.Soldered 2 PCBs. Only one is working correctly, while the other one still has some issues. I’m still trying to figure out what’s wrong.It could just be a loose solder joint or a short circuit caused by a solder bridge. I really don’t want to redo the soldering and add more solder, so I’m checking the connections first and trying to find the problem.