Scary movie where they find a door that was covered up.

This movie is from 1992 or older. Its a scary movie where they find a door that was covered up by drywall or plaster. They go in the door and it locks and the key falls through the floor boards. As they try to get the key the place starts on fire? I was a little kid when I saw this probably in the later 80’s but this scene really sticks in my head.