1) 220 volts to wall receptacle
2) Inspect dryer pigtail/plug connection at the dryer terminal block.
It's not unusual to find burnt wiring from an improper plug install.
3) Thermal Fuse at the heater housing. If defective--verify that the
dryer venting from the rear of the dryer to the outside home
vent hood is clear and unobstructed.
Replace the Operating Thermostat as well if the thermal limiter
4) Heating Element
5) Motor Centrifugal Switch
6) If all of the above is fine--it is likely that the main control board
has a failed relay and needs replacement (Main Board).