spark

Hi all, I got a Delta 50-761 dust collector second hand and it has been giving me trouble. It turns on, fan runs, but it blows the start capacitor within seconds. I replaced the capacitor and it did it again. I looked at the centrifugal switch, thinking it might not be functioning and causing...

I've bought a WiFi Smart Aroma Diffuser in repackaged condition, but as I've tried to use it, it didn't seem to work, as well a spark was visible when I tried to reconnect the power cable. I've disassembled it, and started testing the pcb, and I've noticed that the main power cables are shorted...

Can someone explain me how a 60V 5A power supply can generate that super hot arc (second circuit in the video)? I made the video, and no, there's no hack here, I'm just trying to understand what's going on. https://www.reddit.com/link/s1hp7u/video/t8qu4v4ta3b81/player