Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A thorough disappointment

This oven had a fuse which kept blowing again and again. When we removed the fuse, it worked for a while, but then the timer started to malfunction -- it would move to the "off" position, and then instead of stopping, it would keep going, all the way back to the "on" position and turn itself on again. Beautiful appearance, great capacity, but other than that a dismal failure.