And was there voltage there? Or is it dead?
If it is dead, have you tried the fuse at your 3amp spur (assumeing you have one).....as it says on the tin, only use a 3amp fuse!
If there is power to the back of the unit, could be your pcb is dead, only problem is, if it blew like that, your pump or fan motor or gasvalve solenoid may be gone also and they would be what blew the board!
More info....
T
March 2008