On Thu, 14 Nov 2013 19:50:13 -0700, WW wrote:

The OP may have a sagging heater coil that is touching the case.

That's interesting. I never saw a heater coil, let alone a sagging
heater coil.

Googling for images, I see these:
http://www.partsdr.com/Parts/279838-...er=Forum279838
http://www.rcappliancepartsimages.co...7/00021876.jpg

I'll have to look deeper...