This is what you get when Molexia strikes at about 20 amps of load. It doesn’t smell great.
On a side note, I now understand why some dryers have a broken belt interlock switch that the belt tensioner lands on if it goes slack. On this Frigidaire stack unit, a broken belt lets the tensioner arm land on the motor shaft, causing them to loudly wear a divot in each other and rain metal fillings down into the chassis below.
There was also a completely disintegrated foam gasket that interfaces the lint filter/exhaust duct to the blower inlet.. I never took a picture of it, but my solution was to angrily glob half a tube of rtv silicone there to stick the two back together.
Good Enough For Museum Work.