That’s it. Just the top isn’t opened. Found it snapped/crack but no signs of a spark. Fuse blown though on circuit board. New circuit board didn’t fix the issue. Is this the culprit?
All busbars do it connect the wires together that are attached to the same metal part. The plasic does nothing and just insulates the metal parts from touching anything else.
Just the plastic being broken would not affect any functioning.