I'm a newbie fixing an AB 1336. We blew the IGBT and need a replacement. I do know that it is a Fuji Electric 6MBI 6x50A and I believe it has a 600V rating. However, the part number on the part is incomplete and I can't get a full part number out of Rockwell. A search of the Fuji site hasn't revealed a part with a matching pinout. Any help regarding the Fuji part no and where to find a used one would be greatly appreciated. The board part number is A74104-251-53. Attached is a picture of the pinout as it is soldered in the board (not a great picture but I'm sure you'll get the idea)