Power surge blew my 3amp fuse. Replaced but still won't come on. 24volts gets to the board but will not turn unit on. When I close the door switch the thermostat comes on but goes blank in a few seconds.

Electrical storm zapped my furnace fuse. Replaced fuse and led status light reads all normal. I hear the 24v transformers humming but unit will not come on. There is 120v and 24v as well. When I call for cool the thermostats blanks out. Could it be a bad board?