If the semiconductors in the waffle plate are okay, then replacing the snubber capacitors and the fuse in the MCU will usually get it working again.
If you can carefully remove the blue cap and test it to verify that it is bad, would be very useful for you to know. Maybe just heat the solder joint from the top and ease the part up, working a little on one leg and then the other, back and forth to ease the part up and out.
Even if some solder dripped down it couldn't hurt the extra hard epoxy coating of the waffle plate. Then you can just put a new one in and solder from the top. Careful not to crack the capacitor epoxy.