Sharp Carousel R318AV - Microwave oven - 1.1 cu. ft - 1000 W

The number pad quit working eighty days after date of purchase. The only way the oven would work was thirty seconds at a time using the +30/Start button. Luckily, this happened a few days before the Sam's Club return policy expired. Note: This model (R-318AV) is not listed on the SHARP Web site.

It seemed the longer I used it over several days the louder it became. The fan just kept getting louder each day, until finally I just decided, no more. I had to take it back. It needed a technician.