I caved in.
I summoned a repair tech. He came to my address. I paid him a convenience fee to come, and he billed Suburban for the parts and labor. This was a much better situation than driving to Camping World or even to an address in nearby town since I am located in a rural area.
He stood next to me and I showed him that the ignitor did not work. He went inside the coach, removed the board, replaced it with a new board, and it worked.
It took more time to show him my paperwork (purchase receipt, etc) and pay the convenience fee than it did to replace the board.
I asked him if Suburban is working on a more robust board design and he said NO.