The door hinge on our refrigerator started cracking after about 1.5 years. It was covered by the credit card warranty, so I tried working with a repair company.

The door hinge on our refrigerator started cracking after about 1.5 years. It was covered by the credit card warranty, so I tried working with a repair company. They charged $150 to show up and say they couldn't do anything, then quoted $900 to replace the whole door. It was a $1200 refrigerator. I spent an hour and fixed it myself with some aluminum extrusion and a few rivets, then got reimbursed $700 by the credit card company. My sister in law's oven failed with the self cleaning lock activated. It's an in-wall unit so the repair tech could only think to start cutting apart the wall. Instead, I took a hacksaw blade and painstakingly sawed off the lock. Since I was already committed, we then pulled out the unit and bypassed the failed thermal switch long enough to "unlock" the mechanism. That probably saved at least $1200...