Do you own a VOM (volt ohm meter) and know how to use it? If not then I'd suggest getting one and learning as they are the most used testing device (other than an air pressure guage) for an owner. Unfortunatly working on the furnace requires removing it from an unfriendly location for most. Be prepared to lay on the floor, arms stretched out and mark/cut the wires and disconnect the gas line and flex ducting. If any of that is beyound your comfort zone (either physically or mechanically) then get a professional.
You may want to check on the mfg date and make sure it's not vovered under Dometic`s warranty. If not I'd suggest replacing the board with a Dinosaur brand. Dinosaurelectronics.com
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Marshall
2012 Laredo 303 TG
2010 F250 LT Super Cab, long bed, 4X4, 6.4 Turbo Diesel
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