I reviewed the information online on AppliancePartsPros.com, and the service manual attached to the back of my LG stove/oven. I first verified that the oven temperature sensor was within spec by checking the resistance which was at the 1085 ohm target. I then ordered the replacement control board overnight and was able to install it the Saturday before our planned Easter Sunday dinner with family.
The only problems were that some of the plugs were small and hard to remove as they were locked in place with very small clips (I had to use a small screw driver to gently work them out of their slots), and some of the plugs on the new board were upside down compared to the old board, but I was able to figure this out while reviewing the new board as compared to the old board.
The stove/oven works like a charm, and saved me a $95 service call plus time and materials charges (I'm guessing $250 minimum for the repair), and we would not have had the stove/oven available for Easter Sunday dinner as they could not schedule me until the Tuesday after. First time I've ever tried fixing a major appliance, but this will be my first choice going forward.