http://www.repairclinic.com/
Yungdungwell posted that link that appears decent for appliance troubleshooting.
The real question and reason for this post regards brick masonry. My house has front steps with brick walls and pillars. They've got a white/yellow fungus of some kind growing on them and discoloring them.
Whats the best method to remove that? I'm thinking of spraying it with Bleech water but thought I'd check here first.