While he was fortunate enough that someone labeled it as having a bad power ... circuit boards, it serves as a nice guide for those who are new to the world of electronics troubleshooting and repair.

But what if the smoke came not from a component but from the PCB itself? [Happymacer] chanced upon this sorry situation in a power supply for an electric gate opener. Basking in the Australian ...

No user-serviceable parts inside? Give me a break! The head unit is tough to get to, but the PCBs within the chassis use ...