So, it seems Nintendo has revised the main board for the left joycon. It seems they have fixed(?) the "weak connection" issue by moving the placement of the internal antenna. Other minor changes also, other on board chips were moved to accommodate the new placement of the antenna. Not sure if anything else is different with it. The right joycon main board, from this pair of joycons, was the same as all the rest, no changes made to the right side yet.
JCL-M-11 (HAC-JCL-MAIN-11) is the new part number.



JCL-M-11 (HAC-JCL-MAIN-11) is the new part number.


