The symptoms are...
There is gas in the tank (burners on stove work, water heater works, and gauges say half full.
Thermostat works, calls for heat, blower comes on, but fails to ignite, then shuts down.
Prior to this one would hear the igniter clicking. Nothing now.
There is power to the unit and the fuses are both intact and have been replaced (just to be sure)
the board is one with the blower function integrated into it. I am assuming board component failure, not the entire board.
We had a power outage due to he heavy snow in Alabama, lots of on / off power. I am betting on a powers surge damaging the board component..
The neighbor at the adjacent site claims to be a retired HVAC tech.
Local technician diagnosed the same thing, but doesn't have the part or time now.
I will check out the other suggestions.
My concern now is ordering the part and having it get lost in the Christmas rush. We are also scheduled to change campsites on Friday.