The board was backordered for several months probably due to GE supply chain from China.
We purchased a used dishwasher and installed that in the interim and put the "good" dishwasher in the garage. When the board finally arrived, swapped it out per the video, and attached an extension cord to the dishwasher in the garage to confirm the LED came on and the new board was working.
Then pulled the temporary dishwasher, and reinstalled the repaired one.