What happens when your soldering skills are not as good as you thought they were? Well, usually you end up with something burned. That was exactly what happened to me last week. I replaced damaged motor, soldered wires directly to ESC, just like always, and went flying.
First LiPo, everything good. Second LiPo, no problems. Third LiPo, crash, no damage. Fourth LiPo, still no problems. Fifth LiPo, another crash, minor damage: cable tie holding one of ESC broken. I replaced cable tie, put another LiPo, replaced broken prop and attempted to take off. Quad refused to comply, flipped and popped magical smoke. Second later flame appeared. Fire went down only after disconnecting battery. Damage above repair, PCB burned.
Time for new ESC…