Fuse blown on Panasonic Dimension4 Microwave/Convection the Genius

I experienced a power surge in my house causing numerous items to not work. On a few of them, I simply replaced a small cartridge type fuse (3 or 5 amp glass/ceramic type) to get them working. I took apart my microwave oven and sure enough there was a small fuse on the main control panel (front keyboard) that was blown. I replaced that one - BUT upon plugging in the oven, the replacement 5 amp fuse immediately blew. There is no apparent damage to any of the electronics and there is no 'burnt' smell present. There is a small board that appears to be a 'power board' of some sort - identified as B692Y - with black input and output wire connection points and white wire connection points - with a coil in between. This board clearly shows a 125V FUSE 15A - but there is no apparent fuse - or one that I recognize - with no apparent damage. I do not know what to do to proceed and any suggested course of action would be appreciated.