OK. Tested voltages. Found 120v Line to Ground and 0v Comp to Ground. Is there any chance that there is a thermostat problem? If so, how would I test? (Replacing board would be easy, but I'd like to be sure that I'm aiming at the right part.)
Thanks. I'll get the board and replace. I looked at connections and it looks very straight forward. I'll ask follow-up if I run into anything confusing while replacing.
Everything worked out great. I got the new board through a dealer on Amazon and saved $74. ($95 at Amazon vs $169 at Repair Clinic.) I used the savings to get a new Ice Auger and a new Water Filter cartridge and I still spent less.
The replacement board is an upgraded version and it's not a complete no-brainer to swap. Although anyone with enough patience to get the old board out should have no trouble figuring out the new board's configuration.
Thanks for your help.