The way you want to do your test is with a multi-meter. You should test each fuse and thermostat for continuity. Where you do not have continuity is the part you will want to replace.
Be sure to disconnect the dryer before doing any testing!!
These parts are inexpensive, and even if something else is wrong if one or more than one is bad you will need to replace them. Remember, these things usually fail because of restricted air flow in the dryer. When you replace the part(s) be sure and clean out the system, including the blower.
Good luck and post an update with what you find.