Frigidaire quit, no leds, no cool, just lights

newest issue. Fridge and freezer stopped cooling. Control panel lights out. I assume it is a power board or control board gone bad. Any way to tell which (without a contiguity tester ) ? I have yet to check the outlet for proper voltage. ( I expect it to be ok) Any help would be great!

UPDATE: I pulled the conrol board. re seated the connections and we are back to normal. Inspected the board, didn’t see any burnmarks.

Does this generally indicated a bad board or just bad connection?