Troubleshoot
Decide whether the element is heating slightly or not heating at all. Turn the oven on and waiting five minutes. Put a hand about 2 inches over the element. If the element is giving off no heat at all, the element is likely broken. If it gives off some heat, but not adequate heat, it may be a problem with connections.
Heat, But No Light
If an element gives off some heat, but not enough to glow red, then there is likely no problem with the element itself. The difficulty may be as simple as an element that is not plugged in fully. After the oven cools, try firmly pushing it into place. However, such problems are often caused by a broken wire inside the connecting device or a loose bracket. These repairs usually require a serviceman.
No Heat
If an element gives off no heat whatsoever, it is likely that the element has burned out. Examine the element carefully. Often sugary or fatty foods boiling over onto the element cause it to burn through. Oven cleaner may also burn through an element. Elements may fail with age or faulty construction. You can easily purchase a new element at an appliance store or online and complete the replacement yourself.
