Okay, so Iām doing an autopsy on the Muirderer mini cruiser that I got from @gogomrrobot. I bought it knowing that it wasnāt working, and that possibly either the BMS or anti spark switch had failed. Upon opening it, everything seemed to look okay except for one little spot on the BMS heatsink. Iām guessing this wasnāt an intentional modification to increase current flow. So, does anyone know what, or how this may have happened? Iāve never seen a melted hole on a BMS before. I donāt see anywhere else or any other components that look burnt, but Iām assuming that this is not salvageable, right? I just want to understand what may have been the cause of death for the BMS, before I start clipping wires, and if it could have affected the switch or anything else connected to it.
Was there maybe a screw through there or some other conductive material? My guess is that a live wire has been rubbing on something, worn through the insulation and shorted on that spot.
@thisguyhere Thanks for the confirmation. I guess this is just a paperweight now, but I was expecting that. Looked like the BMS had come loose in the enclosure, so a positive wire must have gotten rubbed through on the heatsink. Iāll look closer to see if there is a burned/melted wire I missed. When this happened to you, did any other components get damaged, or was it limited to the BMS?
Exactly as @thisguyhere said. Its shorted out. One dark late booze filled night I soldered on an xt backwards and the result looked very similar. Mine was un-salvageable as was only one vesc strangely.
So, does anyone know what, or how this may have happened? Iāve never seen a melted hole on a BMS before. I donāt see anywhere else or any other components that look burnt, but Iām assuming that this is not salvageable, right? I just want to understand what may have been the cause of death for the BMS, before I start clipping wires, and if it could have affected the switch or anything else connected to it.
