The 2012 Japanese OBC has a different part number then US Version, but appears to be nearly identical inside.
The main difference is the AC input EMI filter is inside versus the extra filter top box that we have on the top cover. The extra fuse is the same as found in the US top box.
This unit doesn't appear to have suffered from high internal temperatures as the clear tubing on the wires is still visible and no scorching on the inside cover. The AC input filter safety capacitor has leaked its guts, but still measured as a capacitor, so it was probably still working.
The bottom boards are identical. The snubber caps and waffle plate measured good.