I just tried to search out a post that people constantly add to over the years. There were other experts who also answered it.
I just got a notification that it was added to about a week ago (I did not reply, as it was just a "I had the same problem" and a "thank you") Without my replying, I was unable to look through my recent "My Replies" to find it quickly.
Next best thing though,
Maybe you did not check the black wire thorough enough, It seems that it has been the culprit in the many, many replies of that post of multiple pages, that I cannot find at the present time.
I was able to find a Sunday, July 10, 2011 off-shoot from that even older question/ Pay attention to the location of the problem/ see my link!
Let's hear some good news!
Tuesday, July 25th, 2017 AT 7:56 PM