KREWzer posted an answer for this liftmaster Chamberlain Garage Door Opener Transmitter 300MC:
"There is a white plastic gear that moves a slide switch on the main circuit board. Spray..."
KREWzer posted an answer for this Kenmore 44103 Side by Side Refrigerator:
"The tube is frozen in the door. I unhooked mine and used compressed air to melt it."