Oven pilot keeps going out: On the old ranges it's usually a thermocouple, or a dirty pilot. Newer ones have a glow igniter, and when it gets weak it never opens the gas valve. See
oven repair.
Microwave fan won't turn off: Is the stove on? Then that's a heat sensor protecting the microwave, totally normal. Fan running with everything off is a stuck relay on the board. See
microwave repair.
Water puddling inside the fridge: Defrost drain's clogged. We clear it, and if it freezes over again we check the little drain heater. See
refrigerator repair.
Stacked dryer, damp clothes: Lint screen first, then the vent behind the machine. In closets there's often a squashed elbow right back there. See
dryer repair.
Dishwasher stinks: Gunk in the filter and the sump. Clean them out and run a hot cycle with cleaner. Water still sitting at the bottom afterward? Then the drain hose or the pump. See
dishwasher repair.
Washer quits mid-cycle: A bad door lock, a clogged drain filter, or a lopsided load. Combo units can also stall in the dry part when the lint path's full. See
washer repair.