ALWAYS Triple check your wiring and soldering!

 If there is one valuable lesson I have learned in my time, it is this. No matter how sure you are, no matter how correct you think you have things, always, ALWAYS, double, triple and quadruple check your wiring and soldering. Today, I failed to take this advice.

You can have all the fusing and protection on your printer boards, it will not help when you short 24v directly into the toolhead extender PCB's ground plane. Set a nice little fire of the PCB though. Toasty!

At this point it also looks like the 74HCT365 chip on the SKR Pico took the brunt of it as well, as the Fan PWM, Heaters and RGB all no longer work either. Unfortunately, was a brand new SKR Pico. On the upside however, at least it is only a couple of boards. Things could have been a lot worse for sure.