Ok here is what I would do. The first thing I want to do is check the door switch. If that switch is broken the dryer won't go BUT the lights would all be on and the duct fuse intact. If that turned out to be ok, I would remove the ducting
in the rear and look for excessive lint and fluff in the vent hose and the vent pipe to outside. I would look next at the filter and inside the filter housing for fluff and lint. If I saw something I thought might be causing an air restriction I would then guess the duct fuse was blown. Does that make sense to you? I Would need to unplug the machine and move it to a work bench lift or tailgate.
If the top pops i would pop that top Note( if the dryer is a slopehead I would start by removing the door and goalpost front
then pop the top and remove the shroud and drum) I would look
for a loose blower wheel and fluff. I would check the duct fuse