Have you ever had a printed circuit board go bad on you and you needed to repair it but you don't have schematics? If you don't have schematics, it's very hard to troubleshoot any electronic circuit. You can easily get lost and not know where to start looking. Well, there is a method that we use to troubleshoot electronic circuits without schematics and you can easily follow along to develop this skill set too. It'll take practice and over time, you can use this on almost any circuit. Here is a video on how to troubleshoot a linear power supply without any schematic. Remember to like, share, and leave a comment below if you learn anything from this.