Refrigerator power occasionally goes off (lightbulbs are off, and apparently everything else though I haven't tested with a multimeter or anything) but comes back on when I cycle power switch off and back on. (Added due to comments: Yes it has a switch; along the top, where the compressor, condenser, etc. are, behind a panel.) It is a KitchenAid brand "built-in" style side-by-side fridge-freezer, about 12 years old.
- I don't know if it has ever come back on by itself, but it has remained unpowered as long as a few hours.
- By "occasionally" I mean I've found it unpowered 3 or 4 times in a few weeks.
How can I find the cause or determine what will fix it?