Ok you sound like you have a good mechanical sense so to speed it up for you i'am sending you the service manual just click on this link.
I would start checking if the board is getting power.From what you have said it sounds like the control board is the problem.
Tom, I think we're on the right track, and believe it's a bad control module. However:
1) I cannot read all of the last two pages of the PDF with the parts list. I get an error from Adobe Reader saying "the encoding cmap specified by a font is missing." A quick interent search reveals that the creator (not you) did not embed the font used in the parts list section. It displays only dots.
2) I did see the top of the part list however and noticed it does not include the DLE8377NM model.
Perhaps you have another manual you can send?
That is the only manual i have but you can get the parts list at www.repairclinic.com just put in the model#