Unplug the dryer.
Remove the front panel. Two screws on the bottom left and right about 3 inches from the floor and 3 inches in from the sides.
Lift the panel off.
Remove the 2 screws on the bottom right and left of the door. Pull forward and raise it up to disengage lock tabs. Remove the door switch wires.
Under the top lid you will see 2 screws right and left holding the top on. Remove these and lift the top to the rear of the dryer.
From the floor position, reach in and remove the drum belt from the pulley and tension roller.
Remove the drum from the dryer.
On the bottom left rear of the inside cabinet you will see the heater,fuses and thermostats.
With a volt/ohm meter (vom) set for continuity you can remove at least one wire from each part. Then check for continuity through each part.
If you get no reading the part is bad.
Look for burned/separated wires also.
Reverse the above order to re-install parts.
Good luck.