Well, I had pulled that plug before, but I looked at it again. It isn't a blade type plug. It is a pin type plug, and I couldn't clean it with an eraser. I looked at the plug and the pin terminal with a bright light and a magnifier and they are clean. Still doing the same thing.
Another person had suggested testing the switches on the latch. They tested good. Is there a reset method on this unit that I should know about? I have turned the power off for more than an hour with no results.
Any other ideas?