I was recently working on building a drone (aerial, not underwater) using a set of BasicESCs. They worked before this morning, and I confirmed that of them did work this afternoon, but after cutting off the spade connectors and soldering them to the proper ground/power plane connections of the drone chassis (a Holybro S500), I’m now not getting a response. I un-soldered them (including the one that was definitely working this morning) and have confirmed using a power supply (set to 12.20V) that I’m not getting the normal start-up sequence upon applying power (the doo-Doo-DOO that normally happens).
While I’m of course a little bummed about losing this set of ESCs, I’m more concerned about how I broke them–as far as I can tell, I haven’t done anything that I’d consider egregious (the soldering may have gotten the wire warm, but not so hot I couldn’t hold onto it). Are there any common failure modes that I might be able to check on to see what happened, and know about so as to hopefully prevent something like this from happening again in the future?