Ordered all new door switches and a ceramic fuse. Replacing fuse brought it back to life. Upon initial testing, operation was good and repeatable, so I forwent the switch replacement and later used the machine to cook (3) sweet potatoes (at once) using the "Potato" auto sensing button. It then threw an "F4E4 Humidity Sensor" error code. I'm assuming other auto features are either bugged or broken, as well, but standard operation via number pad is dependable so far. Cooked the potatoes for 9 minutes with no issues. I'm also assuming my problem likely lies in the circuit board, not the switches, and whether or not that was the initial culprit or if I caused it when blowing the fuse is anybody's guess. If replacing the board is cost and skill friendly, I'll likely swap out the switches at time of that repair.