I added a connector to my 16 pin ribbon cable but somehow managed to create a short circuit. Most modules are fine but the ER-301 doesn’t show any sign of life (I believe because the short circuit was on the pins that are not used in most of the other modules? 10 vs 16 pins). I’m not a power expert by far but I think -12V and ground were touching.
Devastated of course, and looking for help.
Also including @Nordlys here because I might need him!