Our Samsung range is just over two years old. It started making a horrible noise. After looking at various You Tube videos, I concluded it must be due to a bad convection fan motor. I replaced it, and ended the noise. I was going to replace the fan as well, but the one I ordered was so badly bent upon arrival, I put the old one back in the oven. I should also comment on the condition of the box that the motor came in. It was punctured in several places where the motor had rattled around; no packaging material at all - part from Thailand . Today, I'm going to get an oven thermometer to see if the sensor in the oven is working properly. Baked bread is not browning for some reason. It wasn't browning much prior to the fan fix, so I may have two problems.