Bought a used oven and it heats up nicely. How to repair?

If you have purchased used equipment, it would be wiser to turn to professional specialists. It would be nice if you had a complete diagnosis of the oven. This way you would know that everything is in order with the device. If there is no good specialist in mind, I will give you the contacts of the Winline service center. Engineers do a very high quality cooktops repair  . The cost depends on the complexity of the work.