I had my board go bad on a unit that was less than 10 years old.

The fan would kick on when it called for heat. Every once in a while I could get the furnace to fire, but then stop after a day or two, sometimes hours. Finally crapped out for good. Everything was cleaned, no LED's lid up. replaced the board with an Ebay new board and worked perfect. Saved $90 an hour on an HVAC guy, and did it all myself. Took the old board off, and when I unplugged from 1 wire, I plugged into other - so I would lose where they went.

GL!