15 years ago I my wife and I had purchased an odd sized refrigerator/freezer combo to fit the opening in our kitchen.  Our community had experienced a low voltage situation and a few days later the unit quit working.  Being fully aware of what had caused the problem I was hoping I could replace a power supply and resuscitate it. Fortunately, when I pulled off the back cover I found a circuit board that had a small glass fuse soldered onto it.  The fuse was blown.  It was 4:55 pm in the dead of winter but a quick call to the local automotive parts store and a quick trip down town to get the fuse gave me hope.  I pulled the board, carefully used my soldering iron to remove and replace the fuse and put it back together.  A close friend's mother now lives there and recently confirmed the fridge is still working.