Good Morning; Thank You for your question. If you have an ohm meter, it would come in handy. The parts you will probably will need;
279838 Heater element $54.60
3387134 Control thermostat $21.26
3392519 thermal fuse $14.58
UNPLUG UNIT BEFORE WORKING ON IT, THANKS
To get to the parts, top is lifted by releasing 2 clips at the lf & rf by pressing in and lifting top. Lay back and prop. Now there are 2 screws at the top left and right of the front panel. Remove. Lift front panel off. Remove wires to door switch noting their position. Remove belt noting its position. Lift drum out. You will see the heat element. Use ohm meter after removing wires for continuity. Replace if necessary. The control thermost. is on blower housing. Replace. Thermal fuse is on heater housing, check for continuity. Whether you fix this dryer or install another one. Go behind dryer. The vent coming off of the dryer to the wall outlet must be as straight as possible. No kinks or bad bends. Go outside check wall vent for lint buildup and clean. Hope this helps